Submitted by György Chityil ... on Tue, 01/22/2019 - 14:40 Lemma: proveNgram Count: 1Starts with letter: YesIndefinite Article: aGoogle Ngram Count: 21226722Sense count: 1Contained in other ngrams: 28Hierarchy: Simple PastForms: provenprovingprovesForms Count: 3