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:
aagVBWgGZqxfSUAoPzDjp, BKWSVBWgGZqxfSUAoxUqBW
answer:
aagabfggoqsuvwxzPzDjp, BKWSabfggoqsuvwxzxUqBW


question:
fgvWEBuVQfBsJuYHanBLNBiJBGPuDWedAHdMdTvoOx, OJuCYHanBLNBiJBGPubeJsvBt
answer:
fgvWEBuVQfBsJuabbbghijlnnpuyDWedAHdMdTvoOx, OJuCabbbghijlnnpuybeJsvBt


question:
dnjHKSFygwtxr, ZISFkSFygwujFM
answer:

dnjHKfgswytxr, ZISFkfgswyujFM