C31231211111133131211113313331333133313332233132313331333232212111   >>    C3123121111113313121111331333133313331333223313231333133323221211   <<    C31231211111133131211113313331333133313332233132313331333232212113   >>      C31231211111133131211113313331333133313332233132313331333232212112   >>