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: khJXByCawwCVShUfCFNAbaEbDhqC, IBbAWYkOyCawwCVShUfCNFstTIKqPqb

SOLUTION: khJXBacccfhsuvwwyFNAbaEbDhqC, IBbAWYkOacccfhsuvwwyNFstTIKqPqb

PROBLEM: uLSGlkwIV, qNBGlkuMK

SOLUTION: uLSgklwIV, qNBgkluMK

PROBLEM: XRUHUuyjWFYnhJmevkSuKEi, vLhLBxCUuyjWFYnhJjeLnLfS

SOLUTION:
XRUHfhjjnuuwyymevkSuKEi, vLhLBxCfhjjnuuwyyjeLnLfS