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

int main()
{
    string s1, s2;
    getline(cin, s1);
    getline(cin, s2);
    int m = s1.size();
    int n = s2.size();

    int EDIT[n+1][m+1];

    for(int i = 0; i < m+1; i++)
    {
        EDIT[0][i] = i;
    }
    for(int i = 0; i< n+1; i++)
    {
        EDIT[i][0] = i;
    }

    for(int i = 1; i < n+1; i++)
    {
        for(int j = 1; j < m+1; j++)
        {
            if(s1[j-1] == s2[i-1])
            {
                EDIT[i][j] = EDIT[i-1][j-1];
            }
            else
            {
                EDIT[i][j] = 1+ min({EDIT[i-1][j], EDIT[i][j-1], EDIT[i-1][j-1]});
            }
        }
    }

    for(int i = 0; i < n+1; i++)
    {
        for(int j = 0; j < m+1; j++)
        {
            cout<<EDIT[i][j]<<" ";
        }
        cout<<endl;
    }

    int i = n, j = m;
    while(i > 0)
    {
        //cout<<i<<" "<<j<<endl;
        if(s1[j-1] == s2[i-1])
        {
            i = i-1;
            j = j-1;
        }
        else
        {
            if(EDIT[i][j] == 1 + EDIT[i-1][j-1])
            {
                cout<<s1[j-1]<<" is replaced by "<<s2[i-1]<<endl;
                i = i-1;
                j = j-1;
            }
            else if(EDIT[i][j] == 1 + EDIT[i-1][j])
            {
                cout<<s1[j-1]<<" is inserted"<<endl;
                i = i-1;
            }
            else
            {
                cout<<s1[j-1]<<" is deleted"<<endl;
                j = j-1;
            }
        }
    }








}