#include <bits/stdc++.h>

using namespace std;
string a;
string b;
int v[10005];
int k=0;
int main()
{
    cin>>a;
    cin>>b;
    for(int i=0;i<=b.size()-a.size();i++){
        string s;
        s+=b[i];
        s+=b[i+1];
        s+=b[i+2];
        if(s==a)
            v[++k]=i;
    }
    cout<<k<<endl;
    for(int i=1;i<=k;i++)
        cout<<v[i]<<" ";
}