C1111233131211111211113313331333133313331333133313331333133313112111211211321   >>    C111123313121111121111331333133313331333133313331333133313331311211121121132   <<    C1111233131211111211113313331333133313331333133313331333133313112111211211323   >>      C1111233131211111211113313331333133313331333133313331333133313112111211211322   >>