C1111233131211111211113313331333133313232313331333133313331311211123221   >>    C111123313121111121111331333133313331323231333133313331333131121112322   <<    C1111233131211111211113313331333133313232313331333133313331311211123223   >>      C1111233131211111211113313331333133313232313331333133313331311211123222   >>