#include <iostream>
#include <fstream>
#include <cstring>
#define Nmax 2000005

using namespace std;

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

string a, b;
int p;
int n, s[1<<23];

int main()
{
    f >> a >> b;
    while(p=b.find(a, p)+1)
    {
        n++;
        s[n]=p-1;
    }
    g << n << '\n';
    for (int i = 1; i <= n; i++)
        g << s[i] << " ";
    return 0;
}