anchor.diff:  bucket,ˈbʌkɪt
   buddy,ˈbʌdi
   budget,ˈbʌʤət
  -bug,bʌɡ
  +bug,bʌg
   build,bɪld
   builder,ˈbɪldə
   building,ˈbɪldɪŋ
  
positive.code: excuse,ɪkˈskjuːz
  execute,ˈeksɪkjuːt
  execution,ˌeksɪˈkjuːʃn̩
  executive,ɪɡˈzekjʊtɪv
  exercise,ˈeksəsaɪz
  exhaust,ɪɡˈzɔːst
  exhibit,ɪɡˈzɪbɪt
  exhibition,ˌeksɪˈbɪʃn̩
  exist,ɪɡˈzɪst
  existence,ɪɡˈzɪstəns
  existing,ɪɡˈzɪstɪŋ
  exit,ˈeksɪt
  exotic,ɪɡˈzɒtɪk
  expand,ɪkˈspand
  expansion,ɪkˈspanʃn̩
  expect,ɪkˈspekt
  
negative.code: pastor,ˈpɑːstə
  pat,pat
  patch,paʧ
  patent,ˈpeɪtənt
  path,pɑːθ
  patience,ˈpeɪʃəns
  patient,ˈpeɪʃənt
  patrol,pəˈtrəʊl
  patron,ˈpeɪtrən
  pattern,ˈpatn̩
  