#include <fstream>
#include <cstring>
#define minim(a, b) ((a < b) ? a : b)
#define NMax 2000005
 
using namespace std;
ifstream fin("strmatch.in");
ofstream fout("strmatch.out");
 
int M, N;
string A,B;
int pi[NMax], pos[1024];
  
void make_prefix(void)
{
    int i, q = 0;
  
    for (i = 2, pi[1] = 0; i <= M; ++i)
    {
        while (q && A[q+1] != A[i])
            q = pi[q];
        if (A[q+1] == A[i])
            ++q;
        pi[i] = q;
    }                                                          
}
  
int main(void)
{
    int i, q = 0, n = 0;
      
    getline(fin,A);
    getline(fin,B);
     
    N = B.length();
    M = A.length();
     
    for (i = M; i; --i) A[i] = A[i-1]; A[0] = ' ';
    for (i = N; i; --i) B[i] = B[i-1]; B[0] = ' ';  
      
    make_prefix();
      
    for (i = 1; i <= N; ++i)
    {       
        while (q && A[q+1] != B[i])
            q = pi[q];
        if (A[q+1] == B[i])
            ++q;
        if (q == M)
        {
            q = pi[M];
            ++n;
            if (n <= 1000)
                pos[n] = i-M;
        }   
    }       
  
    fout << n << '\n';
    for (i = 1; i <= minim(n,1000); ++i)
        fout << pos[i] << ' ';
    fout << '\n';
              
    return 0;
}