instruction:
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.
question:
NusDgdNOKbu, mqybJDgdNOeNmDv
answer:
NusddgnoKbu, mqybJddgnoeNmDv


question:
kXyfgXRT, CayfgGQ
answer:
kXfgyXRT, CafgyGQ


question:
uVmRxlWUrrbAIykEGKocRabzFbvWODq, LhslWUrrbAIykEGKocReQc
answer:

uVmRxabcegikklorrruwyabzFbvWODq, LhsabcegikklorrruwyeQc