#include <iostream>
#include <fstream>
#include <cstring>
#include <algorithm>
#define NMAX 2000003

using namespace std;

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

char s1[NMAX];
char s2[NMAX];
int val[1003], ct;

int main() {
    fin.getline(s1, NMAX);
    fin.getline(s2, NMAX);
    string A(s1);
    string B(s2);
    int c = B.find(A, 0);
    while(c != string::npos) {
        if(ct < 1001)
            val[ct++] = c;
        else
            ct++;
        c = B.find(A, c+1);
    }
    fout<<ct<<'\n';
    for(int i = 0; i < ct; ++i) {
        if(i == 1000)
            break;
        fout<<val[i]<<' ';
    }
}