C312312111111331312111133133313231333131133132231333133313223313112123221   >>    C31231211111133131211113313331323133313113313223133313331322331311212322   <<    C312312111111331312111133133313231333131133132231333133313223313112123223   >>      C312312111111331312111133133313231333131133132231333133313223313112123222   >>