#include <fstream>
#include <cstring>
using namespace std;
char a[2000002],b[2000002];
int sol[1002];
int main()
{
    int n,m,i,j,nr,s,d;
    ifstream in("strmatch.in");
    ofstream out("strmatch.out");
    in>>a>>b;
    n=strlen(a);
    m=strlen(b);
    nr=0;
    for(i=0;i<m;i++)
    {
        if(b[i]==a[0])
        {
            s=i;
            d=0;
            while(b[s]==a[d]&&s<m&&d<n)
            {
                s++;
                d++;
            }
            if(d==n)
            {
                sol[++nr]=i;
            }
        }
    }
    out<<nr<<"\n";
    for(i=1;i<=min(1000,nr);i++)
    {
        out<<sol[i]<<" ";
    }
    return 0;
}