#include <fstream>
#include <string>
#include <vector>

using namespace std;
ifstream f("strmatch.in");
ofstream g("strmatch.out");
string A,B;
size_t n;
vector<size_t>sol;
int main()
{

    f>>A>>B;
    n=string::npos;
    for(;;)
    {
        n=B.find(A,n+1);
        if(n==string::npos)break;
        sol.push_back(n);
    }
    g<<sol.size()<<'\n';
    for(auto it:sol)
        g<<it<<' ';
    return 0;
}