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: NEyYftDkqtWUqDWWLzqBFNpwcuWJAG, gmYgvjvPDWWLzqBFNpwcuLdX

A: NEyYftDkqtWUqbcdflnpquwwwzWJAG, gmYgvjvPbcdflnpquwwwzLdX
****
Q: ToXDYmPRTlxAEVKuErGQstYFYfqnbTJdpXyOqLb, ybAEVKuErGQstYFYsrhDg

A: ToXDYmPRTlxaeefgkqrstuvyyfqnbTJdpXyOqLb, ybaeefgkqrstuvyysrhDg
****
Q: QnndJbjyVSTIyn, KFJIPcdlndJbjyVSTrbGBpsiw

A:
QnbdjjnstvyIyn, KFJIPcdlbdjjnstvyrbGBpsiw
****