C111112111133131121133133313331333133313331323133313331333131233132212321   >>    C11111211113313112113313331333133313331333132313331333133313123313221232   <<    C111112111133131121133133313331333133313331323133313331333131233132212323   >>      C111112111133131121133133313331333133313331323133313331333131233132212322   >>