#include <bits/stdc++.h>
using namespace std;
ifstream in("strmatch.in");
ofstream out("strmatch.out");
vector <int> v;
int main()
{
    string a, b;
    in >> a >> b;
    int t = b.find(a);
    while(t != -1)
        v.push_back(t), t = b.find(a, t + 1);
    out << v.size() << '\n';
    for(int i = 0; i < v.size() && i < 1000; i ++)
        out << v[i] << " ";
    return 0;
}