#include <bits/stdc++.h>
using namespace std;

int main()
{
    int a=0,b=0,c=0,d=0,e=0,f=0,g=0,h=0,ii=0,jj=0,kk=0,l=0,m=0,n=0,o=0,p=0,q=0,r=0,ss=0,t=0,u=0,vv=0,w=0,x=0,y=0,z=0;
    vector<string>A,B,C,D,E,F,G,H,I,J,K,L,M,N,O,P,Q,R,S,T,U,V,W,X,Y,Z;
    A.push_back(".***.");
    A.push_back("*...*");
    A.push_back("*...*");
    A.push_back("*****");
    A.push_back("*...*");
    A.push_back("*...*");
    A.push_back("*...*");

    B.push_back("****.");
    B.push_back("*...*");
    B.push_back("*...*");
    B.push_back("****.");
    B.push_back("*...*");
    B.push_back("*...*");
    B.push_back("****.");

    C.push_back(".***.");
    C.push_back("*...*");
    C.push_back("*....");
    C.push_back("*....");
    C.push_back("*....");
    C.push_back("*...*");
    C.push_back(".***.");

    D.push_back("****.");
    D.push_back("*...*");
    D.push_back("*...*");
    D.push_back("*...*");
    D.push_back("*...*");
    D.push_back("*...*");
    D.push_back("****.");

    E.push_back("*****");
    E.push_back("*....");
    E.push_back("*....");
    E.push_back("****.");
    E.push_back("*....");
    E.push_back("*....");
    E.push_back("*****");

    F.push_back("*****");
    F.push_back("*....");
    F.push_back("*....");
    F.push_back("****.");
    F.push_back("*....");
    F.push_back("*....");
    F.push_back("*....");

    G.push_back(".***.");
    G.push_back("*...*");
    G.push_back("*....");
    G.push_back("*....");
    G.push_back("*..**");
    G.push_back("*...*");
    G.push_back(".***.");

    H.push_back("*...*");
    H.push_back("*...*");
    H.push_back("*...*");
    H.push_back("*****");
    H.push_back("*...*");
    H.push_back("*...*");
    H.push_back("*...*");

    I.push_back(".***.");
    I.push_back("..*..");
    I.push_back("..*..");
    I.push_back("..*..");
    I.push_back("..*..");
    I.push_back("..*..");
    I.push_back(".***.");

    J.push_back("..***");
    J.push_back("...*.");
    J.push_back("...*.");
    J.push_back("...*.");
    J.push_back("...*.");
    J.push_back("*..*.");
    J.push_back(".**..");

    K.push_back("*...*");
    K.push_back("*..*.");
    K.push_back("*.*..");
    K.push_back("**...");
    K.push_back("*.*..");
    K.push_back("*..*.");
    K.push_back("*...*");

    L.push_back("*....");
    L.push_back("*....");
    L.push_back("*....");
    L.push_back("*....");
    L.push_back("*....");
    L.push_back("*....");
    L.push_back("*****");

    M.push_back("*...*");
    M.push_back("**.**");
    M.push_back("*.*.*");
    M.push_back("*.*.*");
    M.push_back("*...*");
    M.push_back("*...*");
    M.push_back("*...*");

    N.push_back("*...*");
    N.push_back("*...*");
    N.push_back("**..*");
    N.push_back("*.*.*");
    N.push_back("*..**");
    N.push_back("*...*");
    N.push_back("*...*");

    O.push_back(".***.");
    O.push_back("*...*");
    O.push_back("*...*");
    O.push_back("*...*");
    O.push_back("*...*");
    O.push_back("*...*");
    O.push_back(".***.");

    P.push_back("****.");
    P.push_back("*...*");
    P.push_back("*...*");
    P.push_back("****.");
    P.push_back("*....");
    P.push_back("*....");
    P.push_back("*....");

    Q.push_back(".***.");
    Q.push_back("*...*");
    Q.push_back("*...*");
    Q.push_back("*...*");
    Q.push_back("*.*.*");
    Q.push_back("*..*.");
    Q.push_back(".**.*");

    R.push_back("****.");
    R.push_back("*...*");
    R.push_back("*...*");
    R.push_back("****.");
    R.push_back("*.*..");
    R.push_back("*..*.");
    R.push_back("*...*");

    S.push_back(".****");
    S.push_back("*....");
    S.push_back("*....");
    S.push_back(".***.");
    S.push_back("....*");
    S.push_back("....*");
    S.push_back("****.");

    T.push_back("*****");
    T.push_back("..*..");
    T.push_back("..*..");
    T.push_back("..*..");
    T.push_back("..*..");
    T.push_back("..*..");
    T.push_back("..*..");

    U.push_back("*...*");
    U.push_back("*...*");
    U.push_back("*...*");
    U.push_back("*...*");
    U.push_back("*...*");
    U.push_back("*...*");
    U.push_back(".***.");

    V.push_back("*...*");
    V.push_back("*...*");
    V.push_back("*...*");
    V.push_back("*...*");
    V.push_back(".*.*.");
    V.push_back(".*.*.");
    V.push_back("..*..");

    W.push_back("*...*");
    W.push_back("*...*");
    W.push_back("*...*");
    W.push_back("*.*.*");
    W.push_back("*.*.*");
    W.push_back("*.*.*");
    W.push_back(".*.*.");

    X.push_back("*...*");
    X.push_back("*...*");
    X.push_back(".*.*.");
    X.push_back("..*..");
    X.push_back(".*.*.");
    X.push_back("*...*");
    X.push_back("*...*");

    Y.push_back("*...*");
    Y.push_back("*...*");
    Y.push_back(".*.*.");
    Y.push_back("..*..");
    Y.push_back("..*..");
    Y.push_back("..*..");
    Y.push_back("..*..");

    Z.push_back("*****");
    Z.push_back("....*");
    Z.push_back("...*.");
    Z.push_back("..*..");
    Z.push_back(".*...");
    Z.push_back("*....");
    Z.push_back("*****");

    vector<string>s;
    string v,ans="";
    for(int i=0; i<7; i++)
    {
        cin>>v;
        s.push_back(v);
    }
    for(int k=0; k<s[0].length(); k+=6)
    {
        //cout<<k<<endl;
        for(int i=0; i<7; i++)
        {
            //cout<<k<<" "<<k+5<<endl;
            //cout<<s[i].substr(k,5)<<endl;
           // cout<<A[i]<<endl;
            if(s[i].substr(k,5)==A[i])
            {
                a++;

            }
            if(s[i].substr(k,5)==B[i])
            {
                b++;
            }
            if(s[i].substr(k,5)==C[i])
            {
                c++;
            }
            if(s[i].substr(k,5)==D[i])
            {
                d++;
            }
            if(s[i].substr(k,5)==E[i])
            {
                e++;
            }
            if(s[i].substr(k,5)==F[i])
            {
                f++;
            }
            if(s[i].substr(k,5)==G[i])
            {
                g++;
                //cout<<"sfs"<<endl;
            }
            if(s[i].substr(k,5)==H[i])
            {
                h++;
            }
            if(s[i].substr(k,5)==I[i])
            {
                ii++;
            }
            if(s[i].substr(k,5)==J[i])
            {
                jj++;
            }
            if(s[i].substr(k,5)==K[i])
            {
                kk++;
            }
            if(s[i].substr(k,5)==L[i])
            {
                l++;
            }
            if(s[i].substr(k,5)==M[i])
            {
                m++;
            }
            if(s[i].substr(k,5)==N[i])
            {
                n++;
            }
            if(s[i].substr(k,5)==O[i])
            {
                o++;
            }
            if(s[i].substr(k,5)==P[i])
            {
                p++;
            }
            if(s[i].substr(k,k+5)==Q[i])
            {
                q++;
            }
            if(s[i].substr(k,5)==R[i])
            {
                r++;
            }
            if(s[i].substr(k,5)==S[i])
            {
                ss++;
            }
            if(s[i].substr(k,5)==T[i])
            {
                t++;
            }
            if(s[i].substr(k,5)==U[i])
            {
                u++;
            }
            if(s[i].substr(k,5)==V[i])
            {
                vv++;
            }
            if(s[i].substr(k,5)==W[i])
            {
                w++;
            }
            if(s[i].substr(k,5)==X[i])
            {
                x++;
            }
            if(s[i].substr(k,5)==Y[i])
            {
                y++;
            }
            if(s[i].substr(k,5)==Z[i])
            {
                z++;
            }
        }
        //cout<<g<<endl;
        if(a==7)
            ans+="A";
        else if(b==7)
            ans+="B";
        else if(c==7)
            ans+="C";
        else if(d==7)
            ans+="D";
        else if(e==7)
            ans+="E";
        else if(f==7)
            ans+="F";
        else if(g==7)
            ans+="G";
        else if(h==7)
            ans+="H";
        else if(ii==7)
            ans+="I";
        else if(jj==7)
            ans+="J";
        else if(kk==7)
            ans+="K";
        else if(l==7)
            ans+="L";
        else if(m==7)
            ans+="M";
        else if(n==7)
            ans+="N";
        else if(o==7)
            ans+="O";
        else if(p==7)
            ans+="P";
        else if(q==7)
            ans+="Q";
        else if(r==7)
            ans+="R";
        else if(ss==7)
            ans+="S";
        else if(t==7)
            ans+="T";
        else if(u==7)
            ans+="U";
        else if(vv==7)
            ans+="V";
        else if(w==7)
            ans+="W";
        else if(x==7)
            ans+="X";
        else if(y==7)
            ans+="Y";
        else if(z==7)
            ans+="Z";
            a=0,b=0,c=0,d=0,e=0,f=0,g=0,h=0,ii=0,jj=0,kk=0,l=0,m=0,n=0,o=0,p=0,q=0,r=0,ss=0,t=0,u=0,vv=0,w=0,x=0,y=0,z=0;
    }
    cout<<ans<<endl;
    return 0;
}