(third-person singular simple present pitches in, present participle pitching in, simple past and past participle pitched in)
"pitch-in." YourDictionary, n.d. Web. 21 June 2018. <http://www.yourdictionary.com/pitch-in>.
pitch-in. (n.d.). Retrieved June 21st, 2018, from http://www.yourdictionary.com/pitch-in
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