Basic

 

  1.         tries
  2.         tried
  3.         trying
  4.         dries
  5.         dried
  6.         drying
  7.         hurries
  8.         hurried
  9.         hurrying
  10. studies
  11. studied
  12. studying
  13. plays
  14. played
  15. playing

 

Challenge

 

  1.         obeyed
  2.         obeying
  3.         worrying
  4.         producing
  5.         replied
  6.         January
  7.         February
  8.         September
  9.         October
  10. November
  11. December
  12. architects
  13. structures
  14. honeycomb
parable