#include <fstream>
#include <cstring>
#include <queue>
#define len 2000001

using namespace std;

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

queue<unsigned> q;

char s[len], t[len];

int main()
{
    in >> s >> t;
    q.push(0);
    while(true)
    {
        char *p = strstr(t + q.back() + 1, s);
        if(!p)
            break;
        q.push(p - t);
    }
    q.pop();
    out << q.size() << '\n';
    while(!q.empty())
    {
        out << q.front() << ' ';
        q.pop();
    }
    return 0;
}