remove alias hooffoots (0) -> hooved_toes (2000)
remove implication hooved_toes (2000) -> hooves (147873)
remove implication hooved_digitigrade (229) -> hooved_toes (2000)
remove implication hooved_digitigrade (229) -> digitigrade (125040)
remove implication hooved_plantigrade (1000) -> hooved_toes (2000)