C312312111133131212111133133313231333133313331331121111121111133313331323221221   >>    C31231211113313121211113313331323133313331333133112111112111113331333132322122   <<    C312312111133131212111133133313231333133313331331121111121111133313331323221223   >>      C312312111133131212111133133313231333133313331331121111121111133313331323221222   >>