i, a, u irregular verbs

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Across
  1. 2. Past participle of swim.
  2. 3. Past simple of begin.
  3. 4. Past simple of sing.
  4. 5. Past simple of run.
  5. 7. Past simple of drink.
Down
  1. 1. Past Simple of swim.
  2. 2. Past Participle of sing.
  3. 3. Past participle of begin.
  4. 5. Past participle of run.
  5. 6. Past participle of drink.