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]: ETJDuJSjMEHZhKPQWzeyu, yFfqevHpjMEHZhKPQWzYYHFNPsWDEL
[A]: ETJDuJSehhjkmpqwzzeyu, yFfqevHpehhjkmpqwzzYYHFNPsWDEL


[Q]: CKQYgHPIWZiSstaKIHRfkxyvhGQIYzaS, yeMmPAXtaKIHRfkxyvhGQCESxrCkKHvUcE
[A]: CKQYgHPIWZiSsafghhikkqrtvxyIYzaS, yeMmPAXafghhikkqrtvxyCESxrCkKHvUcE


[Q]: MEETbz, tcETHJ
[A]:
MEetbz, tcetHJ