#include <bits/stdc++.h>

using namespace std;
ifstream in ("strmatch.in");
ofstream out ("strmatch.out");
string x,y;
int nr,v[2000001];
int main()
{
    in>>x;
    in>>y;
    int poz=y.find(x);
    while(poz>=0)
    {
        v[++nr]=poz;
        poz=y.find(x,poz+1);
    }
    out<<nr<<'\n';
    for(int i=1;i<=nr&&i<=1000;i++)
        out<<v[i]<<' ';
    return 0;
}