#include <iostream>
#include <stdio.h>
#include <string.h>
using namespace std;
int pi[200], ans[200], sol[200];
int main() {
    FILE *fin, *fout;
    int i, k, n, m, nr=0;
    char a[200], b[2000];
fin = fopen("kmp.in", "r");
fout = fopen("kmp.out", "w");

fscanf(fin,"%s", &a);
fscanf(fin,"%s", &b);
n=strlen(a);
m=strlen(b);
for(i=n;i>=1;i--)
    a[i]=a[i-1];
for(i=m;i>=1;i--)
    b[i]=b[i-1];
k=0;
a[0]='-';
pi[1]=0;
for(i=2;i<=n;i++){
    while(k!=0&&a[k+1]!=a[i])
        k=pi[k];
    if(a[k+1]==a[i])
        k++;
    pi[i]=k;
}
k=0;
for(i=2;i<=m;i++){
    while(k!=0&&a[k+1]!=b[i])
        k=pi[k];
    if(a[k+1]==b[i])
        k++;
    ans[i]=k;
    if(k==n){
        sol[++nr]=i-n;
        k=pi[n];
    }
}
fprintf(fout,"%d\n", nr);
for(i=1;i<=nr;i++){
    fprintf(fout,"%d ", sol[i]);
}


fclose(fin);
fclose(fout);

    return 0;
}