create implication frenum_ladder (3531) -> ladder_piercing (3879)
create implication guiche_ladder (70) -> ladder_piercing (3879)
create implication guiche_ladder (70) -> guiche_piercing (1028)
create implication scrotum_ladder (56) -> ladder_piercing (3879)
create implication scrotum_ladder (56) -> scrotum_piercing (1334)
create implication sheath_ladder (4) -> ladder_piercing (3879)
create implication sheath_ladder (4) -> sheath_piercing (1539)