#include <stdio.h>
#include <string.h>
#define MAX 2000000
#define MOD1 666013
#define MOD2 1000000007
char a[MAX],b[MAX];
int v[MAX];
int main(){
  FILE *fin=fopen("strmatch.in","r");
  FILE *fout=fopen("strmatch.out","w");
  int n,m,i,am1,am2,bm1,bm2,p1,p2,sol=0;

  fscanf(fin,"%s",&a);
  fscanf(fin,"%s",&b);
  n=strlen(a);
  m=strlen(b);
  if(n>m)
    sol=0;
  else{
    am1=am2=bm1=bm2=0;
    p1=p2=1;
    for(i=0; i<n; i++){
      am1=(am1*27+a[i]-'A')%MOD1;
      am2=(am2*27+a[i]-'A')%MOD2;
      bm1=(bm1*27+b[i]-'A')%MOD1;
      bm2=(bm2*27+b[i]-'A')%MOD2;
      p1=(p1*27)%MOD1;
      p2=(p2*27)%MOD2;
    }
    p1/=27;
    p2/=27;
    for(i=n; i<m; i++){
      bm1=((bm1-(b[i-n]-'A')*p1)*27+b[i]-'A'+MOD1)%MOD1;
      bm2=((bm2-(b[i-n]-'A')*p2)*27+b[i]-'A'+MOD2)%MOD2;
      if(am1==bm1 && am2==bm2)
        v[sol++]=i-n+1;
    }
  }
  fprintf(fout,"%d\n",sol);
  for(i=0; i<sol; i++)
    fprintf(fout,"%d ",v[i]);
  fclose(fin);
  fclose(fout);
  return 0;
}