#include <bits/stdc++.h>

using namespace std;
ifstream fin("strmatch.in");
ofstream fout("strmatch.out");
string s;
string s2;




int main() {

	ios_base::sync_with_stdio(false);
	fin.tie(NULL);

	fin >> s>>s2;
	//cin >> s2;
	vector<int> rez;
	int pos = 0;
	 pos = s2.find(s, pos);
	 while (pos != -1) {
		 rez.push_back(pos);
		 //cout << pos<<' ';
		 pos = s2.find(s, pos + 1);
	 }
	
	 fout << rez.size() <<'\n';

	 for (auto i : rez) {
		 fout << i << ' ';
	 }





	fin.close();
	fout.close();
}