C31231211111133131211113313331333133313332233133313331123313112121333121   >>    C3123121111113313121111331333133313331333223313331333112331311212133312   <<    C31231211111133131211113313331333133313332233133313331123313112121333123   >>      C31231211111133131211113313331333133313332233133313331123313112121333122   >>