Imacomin (牝 1946 黒鹿毛 Heliopolis)
 |-- Infatuation (牝 1953 鹿毛 Rosemont)
 |   |-- In the Act (牝 1960 鹿毛 Turn-to)
 |   |   `-- She's Beautiful (牝 1964 鹿毛 On-And-On)
 |   |-- Isgala (牡 1963 黒鹿毛 Intentionally)
 |   `-- In Devotion (牝 1971 黒鹿毛 Boldnesian)
 |       `-- Tough Critic (牡 1979 鹿毛 Grey Dawn)
 |-- Itsahit (牝 1956 鹿毛 Knockdown)
 |   `-- Ideally (牝 1966 黒鹿毛 Intentionally)
 |       `-- I'm for Keeps (牝 1982 黒鹿毛 For the Moment)
 |-- I'm all Ready (牝 1963 鹿毛 Amerigo)
 |   `-- Imaflash (牝 1973 鹿毛 Reviewer)
 |       |-- Medi Flash (牝 1984 鹿毛 Affirmed)
 |       `-- I Certainly Am (牝 1990 栗毛 Affirmed)
 `-- Imgoinaway (牝 1965 黒鹿毛 On-And-On)
     `-- Precious Elaine (牝 1972 黒鹿毛 Advocator)
         `-- Royal Advocator (牝 1981 黒鹿毛 Majestic Prince)