2023/08/resources/input_small3.txt


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LR

AAA = (AAB, XXX)
AAB = (XXX, AAZ)
AAZ = (AAB, XXX)
BBA = (BBB, XXX)
BBB = (BBC, BBC)
BBC = (BBZ, BBZ)
BBZ = (BBB, BBB)
XXX = (XXX, XXX)