#include <stdio.h>
#include <iostream>
#include <string.h>
using namespace std;
 
const int BIG = 2000005;
char sir_total[100],sir_comparat[100],KMP[100];
 
int main() {
     
    int n,m,k=1,cnt=0,j=1,index = 1;
    int poz[100],z=0;
     
    freopen("imp.in", "r", stdin);
    freopen("imp.out", "w", stdout);
     
   scanf("%s%s",sir_comparat+1,sir_total+1);
    
   n  = strlen(sir_total+1);
   m  = strlen(sir_comparat+1);
    
   if(n < m){
        printf("%d\n",0);
        fclose(stdin);
        fclose(stdout);
    } 
   
   for(int i=1;i<=m;){
       if(sir_comparat[i] == sir_comparat[index]){
           KMP[i] = index;
           index++;
           i++;}
       else{
           if(index)
               index = KMP[index-1];
           else{
               KMP[i] = 0;
               i++;
           }
       }
   }
   while(k < n){
      
       if(j == m-1){
           poz[z] = k-j;
           z++;
           j=1;    
       }   
     //  cout<<"sir_total["<<k<<"]= "<<sir_total[k]<<" ";
      // cout<<"sir_comparat["<<j<<"]= "<<sir_comparat[j]<<'\n';
       if(sir_total[k] == sir_comparat[j]){
           k++;
           j++;
       }
       else{
           if(j>1)
               j = KMP[j-1];
           else
               k++;
       }
       
   }
  
    printf("%d\n",z-1);
    z = min(z, 1000);
   for(int i=1;i<z;i++)
     printf("%d ",poz[i]);
    
    return 0;
        
}