concussion [concussions]+noun[UK: kənˈk.ʌʃ.n̩] [US: kənˈk.əʃ.n̩]
hit [hits]+noun[UK: hɪt] [US: ˈhɪt]
hitting+noun[UK: ˈhɪt.ɪŋ] [US: ˈhɪt.ɪŋ]
hemagglutination+noun
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