create implication muffled_speech (586) -> muffled (4223)
create implication muffled_screaming (286) -> muffled (4223)
create implication muffled_moaning (228) -> muffled (4223)
create implication muffled_sounds (24) -> muffled (4223)
create alias muffled_scream (42) -> muffled_screaming (286)