In this task, you are given an input list A comprising of numbers and alphabets. You need to extract and sort the unique alphabets in the list. The alphabets in the input list will only be in lowercase. Return -1 if there is no alphabet in the input list.

Input: Consider Input: ['d', 'p', 'q', '5319', 'w', '4887', '6695', 't', '7711', 'l', '7597', 's', 'n', '1461', 'e', '9045', '1307', 'j']

Output: d, e, j, l, n, p, q, s, t, w


Input: Consider Input: ['3611', '6825', 'j', 'e', 'r', 'a', '8889', 'y', 'x', 'k', '2651', '4545', '2289', 'r', 'q', '3163', 'a', 'i', 'j', 't', 'b', '2673', '4307', 'q', '5839', 'w', 'g', '6221', 'g', 'h', 'h', '5815', 'n', '3551', '7709', 'z', '2281', '7987', 'w', 'a', '2319', '3337', '3409']

Output: a, b, e, g, h, i, j, k, n, q, r, t, w, x, y, z


Input: Consider Input: ['w', '807', '9029', '345', '2089', 'm', 't', 'l', '3497', '7425', 'q', 'x', '6039', 'j', 'h', 'f', '6121', 'p', '4859', 'u', '3945', '5621', '5603', '7339', 'w', 'r', '3615', '2543', 'l', 'e', '59', 'l', '4479', 'j', 'e', '2341', '6955', 'd', '8077', '817', 'x', 'o', 'i']


Output: d, e, f, h, i, j, l, m, o, p, q, r, t, u, w, x