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.

[Q]: rjtuVgerpGwVmqzUjRZPExMuFQYdL, FieLJfVOlpwVmqzUjRZPExMymltNjNIkmyFR
[A]: rjtuVgerpGejmmpqruvwxzzuFQYdL, FieLJfVOlpejmmpqruvwxzzymltNjNIkmyFR


[Q]: duCZFcwjbZPYfjusrRwLtblsJSvRMtS, MqYfjusrRwLtblsJSMgIRzwJnl
[A]: duCZFcwjbZPbfjjllrrssstuwyvRMtS, MqbfjjllrrssstuwyMgIRzwJnl


[Q]: HHGDoO, DCGDxu
[A]:
HHdgoO, DCdgxu