#include <bits/stdc++.h>
using namespace std;
int v[2000005];
ifstream f("strmatch.in");
ofstream g("strmatch.out");
int main(){
    string A,B;
    f>>A>>B;
    unsigned int poz=0;
    int ct=0;
    while((poz=B.find(A,poz))!=string::npos){
        v[++ct]=poz;
        ++poz;
    }
    g<<ct<<"\n";
    for(int i=1;i<=ct;++i)
       g<<v[i]<<" ";
    return 0;
}