TASK DEFINITION: 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.
PROBLEM: xjATcwhYGWNBSjvWxAcROmJz, XZTcwhYGWNBSjvWxQHmLSAZOlda

SOLUTION: xjAbcghjnstvwwwxyAcROmJz, XZbcghjnstvwwwxyQHmLSAZOlda

PROBLEM: qtekELFXGKkN, qDygekELFXGKXCN

SOLUTION: qteefgkklxkN, qDygeefgkklxXCN

PROBLEM: upkgCiSQfZBu, gQUxegCiSQfZLnSiFn

SOLUTION:
upkcfgiqszBu, gQUxecfgiqszLnSiFn