'a'   properly formed from 'randam'
   'mad'   properly formed from 'randam'
   'ran'   properly formed from 'randam'
'madnar'   properly formed from 'randam'
 'madam' improperly formed from 'randam'
  'ranx' improperly formed from 'randam'
'xxxxxx' improperly formed from 'randam'
     'x' improperly formed from 'randam'