4 letters
- refs7
- regs6
- reif7
- rein5
- reis4
- rend6
- ribs7
- ride5
- rids5
- rife7
- rifs7
- rigs6
- rind6
- ring7
- rins5
- rise4
- robe7
- robs7
- rode5
- rods5
- roes4
- rood5
- roof7
- rose4
- seed5
- seen5
- seer4
- sees4
- sego6
- segs6
- seif7
- seis4
- send6
- sene5
- sere4
- serf7
- sers4
- sibs7
- side5
- sign7
- sine5
- sing7
- sins5
- sire4
- sirs4
- sned6
- snib8
- snob8
- snog7
- sobs7
- sods5
- sone5
- song7
- sons5
- soon5
- sorb7
- sord5
- sore4
- sori4
- sorn5
- sris4