#include <cstdio>
#include <string.h>
int v[1005],cont;
void cautare(char *s,int n ,char *p,int m)
{
	int i,j,k,d[256];

	for ( i=0 ; i < 256 ; i ++)
	d[i]=m;
	for ( j=0 ; j < m-1 ; j++)
		d[p[j]]=m-j-1;
	i=j=m;
	while (i<=n)
	{
		j=m;
		k=i;
		while(j>0 && ( s[k-1]==p[j-1] ) )
		{
			k--;
			j--;
		}
		if(j>0)
			i=i+d[s[k-1]];
		if(j<=0)
		{
			if(cont<1000)
			{
			v[cont++]=i-m;
			i=i+d[p[m-1]];
			}
			else
				return ;
		}
	}
	return ;
}
int main()
{
	freopen("strmatch.in","r",stdin);
	freopen("strmatch.out","w",stdout);
	char s[2000005],p[2000005];
	int m,n;
	scanf("%s%s",p,s);
	n=strlen(s);
	m=strlen(p);
	cautare(s,n,p,m);
	printf("%d\n",cont);
	for(int i=0 ; i < cont ; i ++)
    printf("%d ",v[i]);

}