#include <stdio.h>   
#define minim(a, b) ((a < b) ? a : b)
#define NMax 2000005

int M, N;
char A[NMax], B[NMax];
int pi[NMax], pos[1024];

void make_prefix(void){
    int i, q = 0;
    for (i = 2, pi[1] = 0; i <= M; ++i)    {
	while (q && A[q+1] != A[i])
	    q = pi[q];
	if (A[q+1] == A[i])
	    ++q;
	pi[i] = q;
    }
}

int main(void){
    int i, q = 0, n = 0;
    freopen("strmatch.in", "r", stdin);
    freopen("strmatch.out", "w", stdout);
    fgets(A, sizeof(A), stdin);
    fgets(B, sizeof(B), stdin);
    for (; (A[M] >= 'A' && A[M] <= 'Z') || (A[M] >= 'a' && A[M] <= 'z')
	    || (A[M] >= '0' && A[M] <= '9'); ++M);
    for (; (B[N] >= 'A' && B[N] <= 'Z') || (B[N] >= 'a' && B[N] <= 'z')
	    || (B[N] >= '0' && B[N] <= '9'); ++N);
    for (i = M; i; --i) A[i] = A[i-1]; A[0] = ' ';
    for (i = N; i; --i) B[i] = B[i-1]; B[0] = ' ';
    make_prefix();
    for (i = 1; i <= N; ++i){
	while (q && A[q+1] != B[i])
	    q = pi[q];
	if (A[q+1] == B[i])
	    ++q;
	if (q == M)
	{
	    q = pi[M];
	    ++n;
	    if (n <= 1000)
		pos[n] = i-M;
	}
    }
    printf("%d\n", n);
    for (i = 1; i <= minim(n, 1000); ++i)
	printf("%d ", pos[i]);
    printf("\n");
    return 0;
}