#include <iostream>
using namespace std;

const int side=6;
const int alph=side*side;
const int ZZZ=25;

void db(string a)
{
    for(int i=0;i<alph;i++)
    {
        cout<<a[i];
        if(i%side==5)
        {
            cout<<endl;
        }
    }
}

string shift(string a, char c)
{
	for(int i=0;i<a.length();i++)
	{
		a[i]+=c;
	}
	return a;
}

string redukcja(string klucz)
{
    bool tab[alph]={};
    string out="";
    for(int i=0;i<klucz.length();i++)
    {
        char current=klucz[i];
        if(tab[current]==0)
        {
            tab[current]=1;
            out+=current;
        }
    }

    for(int i=0;i<alph;i++)
    {
        if(tab[i]==0)
        {
            out+=i;
        }
    }

    return out;
}

string szyfrowanie(string msg, string key)
{
    key=redukcja(key);

    int crdx[alph];
    int crdy[alph];
    char vals[side][side];

    for(int i=0;i<alph;i++)
    {
        int tx=i%side;
        int ty=i/side;
        crdx[i]=tx;
        crdy[i]=ty;
        vals[tx][ty]=key[i];
    }

    string out="";
    if(msg.length()%2==1)
    {
        msg+=ZZZ;
    }
    for(int i=0;i<msg.length();i+=2)
    {
        char a=msg[i];
        char b=msg[i+1];
        if(a==b)
        {
            b=ZZZ;
        }
        int x1=crdx[a];
        int x2=crdx[b];
        int y1=crdy[a];
        int y2=crdy[b];

        if(crdy[a]==crdy[b])        //wiersz
        {
            x1=(x1+1)%side;
            x2=(x2+1)%side;
            out+=vals[x1][y1];
            out+=vals[x2][y2];
        }
        else
        if(crdx[a]==crdx[b])
        {
            y1=(y1+1)%side;
            y2=(y2+1)%side;
            out+=vals[x1][y1];
            out+=vals[x2][y2];
        }
        else
        {
            out+=vals[x2][y1];
            out+=vals[x1][y2];
        }
    }

    return out;
}

int main()
{
    string key,msg;
    cin>>key>>msg;
    key=shift(key,-'A');
    msg=shift(msg,-'A');

    string ooo=szyfrowanie(msg,key);
    ooo=shift(ooo,'A');
    key=shift(key,'A');
    cout<<ooo<<endl;
}