create implication muffled_speech (587) -> muffled (4210)
create implication muffled_screaming (282) -> muffled (4210)
create implication muffled_moaning (223) -> muffled (4210)
create implication muffled_sounds (24) -> muffled (4210)
create alias muffled_scream (42) -> muffled_screaming (282)