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.

[Q]: ['3627', '2051', '3203', 'c', 'r', 'a', '1453', 'e', 'z', 't', '1093', '4651', 'a', 'f', '8159', '9623', 'l', 't', 'r', '6963', '7071', '8103', '3493', 'y', '2369', '609', '2011', 'f', '187', 'f', 'c']
[A]: a, c, e, f, l, r, t, y, z


[Q]: ['h', '6865', '4019', '8571', 'y', '5575', '7835', '9537', 'n', '875', 't', 'a', 's', '2769', 'p', '1607', 'n', '4087', '961', '7869', '5085', '2131', '4867', 'j', 'h', 'y', '3105', '6609', 's', 'l', '3399', '5013']
[A]: a, h, j, l, n, p, s, t, y


[Q]: ['1539', 'l', '3309', '5789', 'w', '9835', '1529', 'c', '5829', 'a', '2049', '9859', '6037', 't', 'm', 'p', 'o', 'j', 'b', 'y', '4803', 'y', 'w', '7465', 'j', 'w', 'v', '6597', 'd', 'w', 'g', '7069', 's', 'b', 's', '3011', 'a']
[A]:
a, b, c, d, g, j, l, m, o, p, s, t, v, w, y