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: fhfHkRKXxhXrwmzvUjMkm, RtAJdXxhXrwmzvUGg

SOLUTION: fhfHkRKhmruvwxxxzjMkm, RtAJdhmruvwxxxzGg

PROBLEM: tfbnDJqmosaqNAbxFvNTdos, JmHLsRuAVMtsaqNAbxFvNTxRLvFeIkTL

SOLUTION: tfbnDJqmoaabfnnqstvxdos, JmHLsRuAVMtaabfnnqstvxxRLvFeIkTL

PROBLEM: fiRxRZnJBsnFSsOFUek, KbRZnJBsnFSsUTUZ

SOLUTION:
fiRxbfjnnrssszOFUek, KbbfjnnrssszUTUZ