#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;
}