I've tested all permutations, bainhome, and the test suite results are correct. Test case 4 is due to ABABA and BAAAB, which are two different cases. It is not possible to do the same with test case 5. Since A and B are repeated even times.
High school cafeteria
Project Euler: Problem 8, Find largest product in a large string of numbers
Create One Large Eye of size N x N Quickly?
Replicate elements in vectors
Detect a number and replace with two NaN's
speed vs size
Looking for Squares
letter yes yes & letter no no
Filter AC, pass DC
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