#include<bits/stdc++.h>
using namespace std;
ifstream f("strmatch.in");
ofstream t("strmatch.out");
vector <size_t> sol;
string a,b;
main(){
    f>>a>>b;
    size_t last=b.find(a);
    for(int_fast16_t i=0;last!=string::npos;++i,last=b.find(a,1+last))
        if (i<1000)
            sol.push_back(last);
    t<<sol.size()<<'\n';
    for (vector <size_t>::iterator i=sol.begin();i<sol.end();advance(i,1))
        t<<*i<<" ";
    return 0;
}