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: GpDEcNmPxRXWfIVaRXtePpattPuxz, NfqNQBXWfIVaRXtePpamAXXLcGG

A: GpDEcNmPxRaaefipprtvwxxttPuxz, NfqNQBaaefipprtvwxxmAXXLcGG
****
Q: rgnDefaICqzZA, yQHefaICsIzLb

A: rgnDacefiqzZA, yQHacefisIzLb
****
Q: BLvsXP, CSvsgv

A:
BLsvXP, CSsvgv
****