due eds eff efs ers fed fer feu fud fur red ref res rue ser sue urd use
dues duff dure effs feds feud feus fuds furs fuse reds refs rude rued rues ruff ruse serf sued suer surd sure surf urds used user
druse duffs dures feuds fused ruffe ruffs
duffer ruffed ruffes suffer surfed
Some random words: absorb absent abseil abrupt abroad