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]: APcORoNLzESuyIXawNhUmhLwmIpghftUBCYDX, UfBFIXawNhUmhLwmIpghfKOarPcOxuVrnnLSn
[A]: APcORoNLzESuyafghhhiilmmnpuwwxtUBCYDX, UfBFafghhhiilmmnpuwwxKOarPcOxuVrnnLSn


[Q]: YCsdrEPUozUG, NBArEPUobCSqv
[A]: YCsdeopruzUG, NBAeoprubCSqv


[Q]: rqRgZLgpDwvDksxBIJubrVGqfXqrcLDKxQX, uTGfMxYyjlRgZLgpDwvDksxBIJutLSPJ
[A]:
rqbddggijklprsuvwxzbrVGqfXqrcLDKxQX, uTGfMxYyjlbddggijklprsuvwxztLSPJ