remove implication duo_focus (32722) -> group (560179)
create implication trio_focus (1715) -> group (560179) # duplicate of implication #28681
remove implication threesome (68606) -> group_sex (121726)
remove implication sandwich_position (4633) -> group_sex (121726)
remove implication train_position (3054) -> group_sex (121726)
remove implication triangle_position (900) -> group_sex (121726)
remove implication spitroast (18982) -> group_sex (121726)
remove implication reverse_spitroast (451) -> group_sex (121726)
remove implication collaborative_footjob (306) -> group_sex (121726)