#include <fstream>
#include <vector>

#define mod 1000000009
#define int long long

using namespace std;

std::vector<int> ans;
std::string s, s2;
int hash1 = 0, hash2 = 0, p = 1, p2;

ifstream cin ("strmatch.in");
ofstream cout ("strmatch.out");

signed main()
{
    cin >> s >> s2;
    for(int i = s.size() - 1;i >= 0; i--)
    {
        hash1 = (hash1 + p * (s[i] - 'A')) % mod;
        hash2 = (hash2 + p * (s2[i] - 'A')) % mod;
        p2 = p;
        p = (p * 26) % mod;
    }
    p = p2;
    for(int i = s.size();i < s2.size(); i++)
    {
        if(hash1 == hash2 && ans.size() < 1000)
            ans.push_back(i-s.size());
        hash2 = (26 * ((hash2 - (p * (s2[i-s.size()] - 'A')) % mod + 2 * mod) % mod) + s2[i] - 'A') % mod;
    }
    if(hash1 == hash2 && ans.size() < 1000)
        ans.push_back(s2.size() - s.size());
    cout << ans.size() << '\n';
    for(int i = 0;i < ans.size(); i++)
        cout << ans[i] << ' ';
}