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

ifstream f("strmatch.in");
ofstream g("strmatch.out");

vector <int> v;

char a[2000001], b[2000001];

int q;

int main()
{
    f >> a;
    int m = strlen(a);

    f.get();

    f >> b;
    int n = strlen(b);

    for(int i = 0; i < n; ++ i)
        if(b[i] == a[0])
        {
            int j = i + 1;
            q = 1;
            while(b[j] == a[q] && q < m)
            {
                j ++;
                q ++;
            }
            if(q == m) v.push_back(i);
        }

    g << v.size() << "\n";

    for(int i = 0; i < v.size(); ++ i)
        g << v[i] << " ";
    return 0;
}