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.

[Q]: ToXDYmPRTlxAEVKuErGQstYFYfqnbTJdpXyOqLb, ybAEVKuErGQstYFYsrhDg
[A]: ToXDYmPRTlxaeefgkqrstuvyyfqnbTJdpXyOqLb, ybaeefgkqrstuvyysrhDg


[Q]: iWGQpnsUkTbFeZiCQJ, tKTDrpnsUkTbFLS
[A]: iWGQbfknpstueZiCQJ, tKTDrbfknpstuLS


[Q]: McNLIyZmbgWZjqnVCXXFO, sPFSHSJoIyZmbgWZjqnJuRDLWtZX
[A]:
McNLbgijmnqwyzzVCXXFO, sPFSHSJobgijmnqwyzzJuRDLWtZX