#include <fstream>
#include <string>
#include <queue>

std::ifstream fin("strmatch.in");
std::ofstream fout("strmatch.out");

std::string ac, hatch;
std::queue<std::size_t> rs;



int main() {

	fin >> ac >> hatch;

	std::size_t pos = 0;
	while (1) {
		pos = hatch.find(ac, pos + 1);
		if (pos == std::string::npos) break;
		else rs.push(pos);
	}
	fout << rs.size() << "\n";
	int p = 0;
	while (!rs.empty()) {
		fout << rs.front() << " ";
		rs.pop();
		p++;
		if (p == 1000) break;
	}
	fout << "\n";
	return 0;
}