In this task, you are given two strings A,B. Find the longer of the two lists, convert it to lowercase, and return all the unique alphabets used in it. The two input strings are never equal.
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Question: ZyQOrnprizfByCvFgHPhXWtTB, qFwKKwszYmzfByCvFgHPhFoLkYBBdy

Answer: b, c, d, f, g, h, k, l, m, o, p, q, s, v, w, y, z


Question: jDsAaESWoT, tEVAaESWNNmW

Answer: a, e, m, n, s, t, v, w


Question: GSOLrwnsdPnSwA, LYrwnsdxZqgR

Answer:
a, d, g, l, n, o, p, r, s, w