D

#include<bits/stdc++.h>
using namespace std;
#define MAX 100002
#define pb push_back
#define sz size()
#define loop(i,n) for(ll i=0;i<n;i++)
#define loop1(i,n) for(int i=1;i<=n;i++)
#define loopa(i,a,n) for(int i=a;i<=n;i++)
#define loopr(i,n) for(int i=n-1;i>=0;i--)
#define sc(n) scanf("%d",&n)
#define sc2(n,m) scanf("%d %d",&n,&m)
#define sc3(a,b,c) scanf("%d %d %d",&a,&b,&c);
#define ll long long
#define all(v) (v.begin(),v.end())
#define pii pair<int,int>
#define inf 1e18
#define mem(a,n) memset(a,n,sizeof a)
#define ff first
#define ss second
#define mp make_pair


int main()
{

    string arr[MAX/10];
    int arr2[27][3]= {{3,5,2},{4,4,4},{3,1,3},{4,2,4},{5,4,5},{5,4,1},{3,1,3},{2,5,2},{3,1,3},{3,1,2},{2,2,2},{1,1,5},{2,3,2},{2,3,2},{3,2,3},{4,4,1},{3,2,3},{4,4,2},{4,3,4},{5,1,1},{2,2,3},{2,2,1},{2,3,2},{2,1,2},{2,1,1},{5,1,5},{0,0,0}  };
    for(int i=0; i<7; i++)
    {
        cin >>arr[i];
    }

    int c1=0,c2=0,c3=0,c4=0,c5=0;
    for(int i=0; i<arr[0].sz; i++)
    {
//        cout <<"loop "<< i<<endl;
        if(arr[0][i]=='*')
            c1++;
        if(arr[3][i]=='*')
            c2++;
        if(arr[6][i]=='*')
            c3++;
        if(arr[4][i]=='*')
            c4++;
        if(arr[5][i]=='*')
            c5++;

        if((i+2)%6==0)
        {
//            cout <<"yes1 "<< i<<endl;
            char ch;
            for(int j=0; j<=27; j++)
            {

                if(arr2[j][0]==c1 and arr2[j][1]==c2 and arr2[j][2]==c3)
                {
                    ch=(char) (j+65);
                }
                if(ch=='C' or ch=='G' or ch=='I')
                {
                    if(c4==1 and c5==2)
                        ch='C';
                    else if(c4==3 and c5==2)
                        ch='G';
                    else
                        ch='I';
                }
                if(ch=='M' or ch=='N')
                {
                    if(c4==2)
                        ch='M';
                    else
                        ch='N';
                }
                if(ch=='O' or ch=='Q')
                {
                    if(c4==2)
                        ch='O';
                    else if(c4==3)
                        ch='Q';
                }


            }
            cout <<ch;
            c1=0;
            c2=0;
            c3=0;
            c4=0;c5=0;
        }
        else
            continue;


    }

}