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

using namespace std;

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

vector <size_t> sol;
string a,b;

int main()
{
    f>>a>>b;
    size_t last=0;
    for (int_fast16_t i=0;i<1000;++i){
        last=b.find(a,1+last);
        if (last==-1)
            break;
        sol.push_back(last);
    }
    t<<sol.size()<<'\n';
    for (auto i:sol)
        t<<i<<" ";
    return 0;
}