create implication muffled_speech (592) -> muffled (4227)
create implication muffled_screaming (286) -> muffled (4227)
create implication muffled_moaning (229) -> muffled (4227)
create implication muffled_sounds (24) -> muffled (4227)
create alias muffled_scream (42) -> muffled_screaming (286)