C31231211111133131211113313331333133313332233132313331333132313331322211221   >>    C3123121111113313121111331333133313331333223313231333133313231333132221122   <<    C31231211111133131211113313331333133313332233132313331333132313331322211223   >>      C31231211111133131211113313331333133313332233132313331333132313331322211222   >>