#include <fstream>
#include <cstring>
using namespace std;
ifstream f("strmatch.in");
ofstream g("strmatch.out");
int n,m,i,j,p[2000005],k,sol[2000005],nr;
char a[2000005],b[2000005];
int main()
{

    f>>a+1;
    f>>b+1;
    n=1;
    while(a[n]>='A'&&a[n]<='Z') n++;
    m=1;
    while(b[m]>='A'&&b[m]<='Z') m++;
    n--;
    m--;
    k=0;
    for(i=2; i<=n; i++)
    {
        while(a[k+1]!=a[i]&&k!=0) k=p[k];
        if(a[k+1]==a[i]) k++;
        p[i]=k;
    }
    k=0;
    for(i=1; i<=m; i++)
    {
        while(a[k+1]!=b[i]&&k!=0) k=p[k];
        if(a[k+1]==b[i]) k++;
        if(k==n)
        {
            nr++;
            sol[nr]=i-n;
            //k=p[k];
        }
    }
    g<<nr<<'\n';
    for(i=1;i<=nr;i++) g<<sol[i]<<" ";
    return 0;
}