#include <bits/stdc++.h>
using namespace std;
ifstream fin("strmatch.in");
ofstream fout("strmatch.out");
char a[2000001],b[2000001];
char *p;
int sol[2000001],n;
int main()
{
    int i;
    fin>>a>>b;
    p=strstr(b,a);
    while(p!=NULL)
    {
        sol[++n]=(p-b);
        p++;
        p=strstr(p,a);
    }
    n=min(n,1000);
    fout<<n<<"\n";
    for(i=1;i<=n;i++)
        fout<<sol[i]<<" ";
    fout<<"\n";
    fin.close();
    fout.close();
    return 0;
}