remove implication duo_focus (29157) -> group (488683)
create implication trio_focus (1390) -> group (488683) # duplicate of implication #28681
remove implication threesome (61934) -> group_sex (110198)
remove implication sandwich_position (4058) -> group_sex (110198)
remove implication train_position (2808) -> group_sex (110198)
remove implication triangle_position (833) -> group_sex (110198)
remove implication spitroast (16945) -> group_sex (110198)
remove implication reverse_spitroast (425) -> group_sex (110198)
remove implication collaborative_footjob (264) -> group_sex (110198)