Irregular verbs

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Across
  1. 1. infinitive of sown
  2. 5. past participle of to tread
  3. 6. infinitive of to light
  4. 7. Past participle of withstand
  5. 9. Past participle of to ring
Down
  1. 1. infinitive of speeded
  2. 2. Past tense of to bite
  3. 3. Past participle of to forbear
  4. 4. past participle of to slay
  5. 8. past tense of to strike