#include<stdio.h>
#define NMAX 2000412
using namespace std;
FILE *f=fopen("strmatch.in","r");
FILE *g=fopen("strmatch.out","w");
char N[NMAX],M[NMAX];
int i,j,n,m,pi[NMAX],rez[1200],p,k;
void mpre()
{ int k=0;
  pi[1]=0;
  for(int i=2;i<=n;++i) 
  { while(k&&(N[k+1]!=N[i])) k=pi[k];
    if(N[k+1]==N[i]) ++k;
    pi[i]=k;
}
}  
int main()
{ fgets(N,NMAX+1,f);
  fgets(M,NMAX+1,f);
  n=0;
  m=0;
  while((N[n]>='0'&&N[n]<='9')||(N[n]>='a'&&N[n]<='z')||(N[n]>='A'&&N[n]<='Z'))
                                                                                ++n;
  while((M[m]>='0'&&M[m]<='9')||(M[m]>='a'&&M[m]<='z')||(M[m]>='A'&&M[m]<='Z')) ++m;
  for(i=n;i;--i) N[i]=N[i-1];N[0]='-';
  for(i=m;i;--i) M[i]=M[i-1];M[0]='-';
  mpre();
  k=0;
  for(i=1;i<=m;++i) 
  { while(k&&N[k+1]!=M[i]) k=pi[k];
    if(N[k+1]==M[i]) ++k;
    if(k==n) { k=pi[n];
               if(p<1000) rez[++p]=i-n;
               }
  }
  fprintf(g,"%d\n",p);
  if(p>1000) p=1000;
  for(i=1;i<=p;++i) fprintf(g,"%d ",rez[i]);
  fprintf(g,"\n");
  fclose(f);
  fclose(g);
  return 0;
}