#include <iostream>
#include <cstdio>
#include <vector>

using namespace std;

int main(int argc, const char * argv[]) {
    freopen("strmatch.in", "r", stdin);
    freopen("strmatch.out", "w", stdout);
    
    string a, b;
    vector<int> ans;
    
    cin >> a >> b;
    int i = (int) a.size() - 1; // a
    int j = (int) a.size() - 1; // b
    while (j < b.size() && ans.size() <= 100) {
        bool match = true;
        for (int k = 0; k < a.size(); ++k) {
            if (a[i - k] != b[j - k]) {
                match = false;
                break;
            }
        }
        
        if (match) {
            ans.push_back(j - i);
        }
        ++j;
    }
    
    cout << ans.size() << '\n';
    for (int x : ans) {
        cout << x << ' ';
    }
    
    return 0;
}