Ebony Requires Ivory (one) Ebony Can take Ivory (2) Ebony Usually takes Ivory (3) Ebony Usually takes Ivory (four) Ebony Usually takes Ivory (5) Ebony Will take Ivory (6) Ebony Usually takes Ivory (7) Ebony Usually takes Ivory (8) Ebony Can take Ivory (nine) Ebony Will take Ivory (10) Ebony Takes Ivory (11) Ebony Requires Ivory (twelve) Ebony Usually takes Ivory (13) Ebony Usually takes Ivory (14) Ebony Normally takes Ivory (fifteen) Ebony Takes Ivory (sixteen) Ebony Can take Ivory (17) Ebony Normally takes Ivory (eighteen) Ebony Requires Ivory (19)