In this task, you are given two strings A,B. You must perform the following operations to generate the required output list: (i) Find the longest common substring in the strings A and B, (ii) Convert this substring to all lowercase and sort it alphabetically, (iii) Replace the substring at its respective positions in the two lists with the updated substring.

[EX Q]: GMtJdYmbaQesEjyAgKqltvFeGIiKrxaRturEVpQB, MEuQYUyYEVyAgKqltvFeGIiKkRVywRG
[EX A]: GMtJdYmbaQesEjaefggiikklqtvyrxaRturEVpQB, MEuQYUyYEVaefggiikklqtvykRVywRG

[EX Q]: wcdzNtQvnOOTMuxGMzYpTqAbHdTDRIryw, AegwQsadoftBTMuxGMzYpTqAbHdTDRfzJCSiikYfbvTNYOen
[EX A]: wcdzNtQvnOOabddghmmpqrtttuxyzIryw, AegwQsadoftBabddghmmpqrtttuxyzfzJCSiikYfbvTNYOen

[EX Q]: pfpRTREikdDwE, qVsRTREicg
[EX A]:
pfpeirrtkdDwE, qVseirrtcg