#include<stdio.h>
#include<string>
#include<iostream>
#include<list>

using namespace std;

string cuv,text;
int l[1000],ap=0;
//list<int> loc;
int loc[1001];

void createL()
{
	l[0]=-1;
	for(int i=1;i<cuv.size();i++)
	{
		int k=l[i-1];
		while(k>-1&&cuv[i]!=cuv[k+1])k=l[k];
		if(cuv[k+1]==cuv[i])k++;
		l[i]=k;
	}
}

void kmp()
{
	int k=l[0];
	for(int i=0;i<text.size();i++)
	{
		while(k>-1&&text[i]!=cuv[k+1])k=l[k];
		if(cuv[k+1]==text[i])k++;
		if(k+1==cuv.size())
		{
			ap++;
			//if(loc.size()<1000)loc.push_back(i-k+1);
			if(ap<1000)loc[ap]=i-k+1;
		}
	}
}

int main()
{
	freopen("strmatch.in","r",stdin);
	freopen("strmatch.out","w",stdout);
	
	getline(cin,text);
	getline(cin,cuv);
	
	createL();
	kmp();
	
	printf("%d\n",ap);
	list<int>::iterator it;
	//for(it=loc.begin();it!=loc.end();it++)printf("%d ",*it);
	for(int i=1;i<=ap&&i<=1000;i++)printf("%d ",loc[i]);
	return 0;
}