#include<fstream>
#include<string>
#include<vector>
 
using namespace std;
 
ifstream in("strmatch.in");
ofstream out("strmatch.out");
 
int main()
{
    string m,n,p,q;
    vector<int> b;
    in>>m>>n;
    int M=m.length(),N=n.length(),i=M,j=M;
	while(i!=-1)
	{
		i=m.rfind(m.at(M-1),i-2)+1;
		p=m.substr(0,i);
		q=m.substr(M-i);
		if(i!=-1&&p==q)
		{
			j=M-i;
			break;
		}
	}
	i=n.find(m);
	b.push_back(i);
    while(i!=-1)
    {
        i=n.find(m,i+j);
		b.push_back(i);
	}
	if(b.at(b.size()-1)==-1) b.pop_back();
    out<<b.size()<<'\n';
    for(i=0;i<b.size()&&i<1000;i++) out<<b.at(i)<<" ";
}