remove implication duo_focus (27717) -> group (460553)
create implication trio_focus (1272) -> group (460553) # duplicate of implication #28681
remove implication threesome (59011) -> group_sex (105131)
remove implication sandwich_position (3814) -> group_sex (105131)
remove implication train_position (2664) -> group_sex (105131)
remove implication triangle_position (804) -> group_sex (105131)
remove implication spitroast (16056) -> group_sex (105131)
remove implication reverse_spitroast (410) -> group_sex (105131)
remove implication collaborative_footjob (252) -> group_sex (105131)