C312312111111331312111133133313231333131133132231333133313331331122331221   >>    C31231211111133131211113313331323133313113313223133313331333133112233122   <<    C312312111111331312111133133313231333131133132231333133313331331122331223   >>      C312312111111331312111133133313231333131133132231333133313331331122331222   >>