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:
qtekELFXGKkN, qDygekELFXGKXCN
answer:
qteefgkklxkN, qDygeefgkklxXCN


question:
NzUNvIzWpiVeoVYUqLuBRsOBV, uIezukAswBWnLkzzkNvIzWpiVeoVYUqLuBRnAZSAhTPumBEWQwtHo
answer:
NzUbeiilnopqruuvvvwyzsOBV, uIezukAswBWnLkzzkbeiilnopqruuvvvwyznAZSAhTPumBEWQwtHo


question:
zSdSPLevHgi, FCTRSPLevLwq
answer:

zSdelpsvHgi, FCTRelpsvLwq


