C1111233131211111211113313331333133313232313331333131113231323321   >>    C111123313121111121111331333133313331323231333133313111323132332   <<    C1111233131211111211113313331333133313232313331333131113231323323   >>      C1111233131211111211113313331333133313232313331333131113231323322   >>