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:
lXtnYyAyCMgqnXBMN, rLtnYyAyCMkfpr
answer:
lXacmntyyygqnXBMN, rLacmntyyykfpr


question:
JNWptPmePuIhkZrcerONT, rHlmdPuIhkZrcerIaO
answer:
JNWptPmecehikprruzONT, rHlmdcehikprruzIaO


question:
tZDDUlWgeQxYmJqY, rGqHkDUlWgeQxBB
answer:

tZDdeglquwxYmJqY, rGqHkdeglquwxBB