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Question: How to sort and group by list of lists

Question:How to sort and group by list of lists

ComputerUser 535 Maple 12
sort list
November 07 2020
0

[[1,1,["ab","xy"]], [0,1,["xy"]]]
 

how to sort by first number , second number , and list of string ?

how to count and group by third list of strings having first two number 0,0 or 0,1 or 1,0 or 1,1 

for example 

["xy"] at most count 4  , at least count 1

would like to find which is [1,1,... ] and only count 1

 
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