C31231211111133131211113313231333133313331333131333133313331333133313232213321   >>    C3123121111113313121111331323133313331333133313133313331333133313331323221332   <<    C31231211111133131211113313231333133313331333131333133313331333133313232213323   >>      C31231211111133131211113313231333133313331333131333133313331333133313232213322   >>