The bulk update request #10738 is pending approval.
create alias arm_under_breast (103) -> arm_under_breasts (2874)
create alias arms_crossed_under_breasts (203) -> arm_under_breasts (2874)
create alias hand_under_breast (249) -> arm_under_breasts (2874)
create alias hands_under_breasts (127) -> arm_under_breasts (2874)
create implication arm_under_breasts (2874) -> breasts (2049363)
Reason: Do we need all these tags for what is mostly the same thing? Do we need to differentiate between singular and plural? arms_under_breasts is already aliased to arm_under_breasts but the wiki pages still emphasize a difference between the tags.
hand(s)_under_breast(s) contains a mixture of arm_under_breasts and holding_breast.
Also arm_under_breasts doesn't implicate breasts for some reason.
Updated