C1111233131211111211113313331333133313232212111133133313332123221   >>    C111123313121111121111331333133313331323221211113313331333212322   <<    C1111233131211111211113313331333133313232212111133133313332123223   >>      C1111233131211111211113313331333133313232212111133133313332123222   >>