C312312111111331312111133133313331333133313232233133313231333132323131   >>    C31231211111133131211113313331333133313331323223313331323133313232313   <<    C312312111111331312111133133313331333133313232233133313231333132323133   >>      C312312111111331312111133133313331333133313232233133313231333132323132   >>