C312312111111331312111133133313231333131133132231333133313331331123223322321   >>    C31231211111133131211113313331323133313113313223133313331333133112322332232   <<    C312312111111331312111133133313231333131133132231333133313331331123223322323   >>      C312312111111331312111133133313231333131133132231333133313331331123223322322   >>