C31231211111133131211113313331333133313332233133313331123313112111221111   >>    C3123121111113313121111331333133313331333223313331333112331311211122111   <<    C31231211111133131211113313331333133313332233133313331123313112111221113   >>      C31231211111133131211113313331333133313332233133313331123313112111221112   >>