The bulk update request #12816 is pending approval.
create implication liquid_tail (5) -> tail (1838367)
create implication rock_tail (7) -> tail (1838367)
create implication water_tail (9) -> liquid_tail (5)
create alias iron_tail (17) -> metal_tail (160)
create implication metal_tail (160) -> tail (1838367)
Reason: These tail type haven't been implied with the main tag. While iron tail looks too similar to a more generic metal tail so it's redundant.