#include<stdio.h>
#include<string.h>
char s[2000005],u[2000005];
int v[1005],i,t,k,m,n,j,p[2000005],q;
int main() {
	freopen("strmatch.in","r",stdin),freopen("strmatch.out","w",stdout),gets(s),gets(u);
	for(;(s[m]>='0'&&s[m]<='9')||(s[m]>='a'&&s[m]<='z')||(s[m]>='A'&&s[m]<='Z');m++);
	for(;(u[n]>='0'&&u[n]<='9')||(u[n]>='a'&&u[n]<='z')||(u[n]>='A'&&u[n]<='Z');n++);
	for(i=m;i;i--)
        s[i]=s[i-1];
    for(i=n;i;i--)
        u[i]=u[i-1];
    s[0]=u[0]=' ';
	for(i=2;i<=m;i++) {
		for(;k&&s[k+1]!=s[i];k=p[k]);
      	if(s[k+1]==s[i])
            k++;
      	p[i]=k;
	}
	for(j=1;j<=n;j++) {
		for(;q&&s[q+1]!=u[j];q=p[q]);
      	if(s[q+1]==u[j])
            q++;
      	if(q==m) {
		  	if(t<1000)
                v[t]=j-m;
            q=p[m],t++;
		}
	}
	printf("%d\n",t);
	for(i=0;i<(t<1000?t:1000);i++)
    	printf("%d ",v[i]);
}