Irregular verbs

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Across
  1. 2. past participle of know
  2. 3. past participle of meet
  3. 5. past tense of hear
  4. 6. past tense of let
  5. 7. past tense of pay
Down
  1. 1. infinitive of lost
  2. 3. past tense of make
  3. 4. past tense of keep
  4. 6. infinitive of left