8 solution(s)
Board: 
  east
  rest
  arts
  arid
Board: 
  arid
  arts
  rest
  east
Board: 
  eraa
  aerr
  ssti
  ttsd
Board: 
  ttsd
  ssti
  aerr
  eraa
Board: 
  aare
  rrea
  itss
  dstt
Board: 
  dstt
  itss
  rrea
  aare
Board: 
  tsae
  tser
  stra
  dira
Board: 
  dira
  stra
  tser
  tsae