5. abc-free permutations consider permutations of the 26-character lowercase alphabet e = {a, b,c, d, e, f, g, h, i, j, k, l, m, n, o, p, q, r, s, t, u, v, w, x, y,z} . 1. in how many of these permutations do a, b, c occur consecutively and in that order? 2. in how many of these permutations does a appear before b and b appear before c?