#include<fstream>
#include<string.h>
#include<iostream>
using namespace std;
ifstream fin("strmatch.in");
ofstream fout("strmatch.out");
int n,m,i,j,poz[2000005],contor,ok;
char a[2000005],b[2000005];
int main()
{
    fin>>a;
    fin.get();
    fin>>b;
    fin.get();
    n=strlen(a);
    m=strlen(b);
    contor=0;
    for(i=0;i<=m-n;i++)
        if(b[i]==a[0])
        {
            ok=1;
            for(j=i;j<=i+n-1;j++)
                if(b[j]!=a[j-i])
                {
                    ok=0;
                    break;
                }
            if(ok==1)
            {
                contor++;
                if(contor<=1000)
                    poz[contor]=i;
            }
        }
    fout<<contor<<"\n";
    for(i=1;i<=contor && i<=1000;i++)
        fout<<poz[i]<<" ";
    fin.close();
    fout.close();
    return 0;
}