R-controlled vowels

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Across
  1. 2. made of letters
  2. 4. after second
  3. 6. exercise
  4. 9. before second
  5. 11. rhymes with twirled
  6. 13. the call of a lion
  7. 14. opposite of late
Down
  1. 1. without blemish
  2. 3. our home planet
  3. 5. she did it all by ________
  4. 7. need a drink
  5. 8. rhymes with swerve
  6. 10. action word
  7. 11. slimy insect
  8. 12. not clean