5 letters
- rales6
- rance9
- range8
- ranis6
- razes14
- reals6
- regal8
- regna8
- reign8
- reins6
- relic9
- renal7
- renig8
- resin6
- rials6
- rices8
- ricin9
- riels6
- riles6
- rings8
- rinse6
- risen6
- rugae8
- rugal9
- ruing9
- ruins7
- rules7
- runes7
- rungs9
- runic10
- sager7
- saice8
- salic9
- saner6
- sarge7
- sarin6
- sauce9
- scale9
- scare8
- scaur9
- scena9
- scrag10
- segni8
- sengi8
- serac8
- serai5
- seral6
- serin6
- sieur6
- sigil8
- since9
- singe8
- siren6
- sizar14
- sizer14
- slain7
- slang9
- slice9
- slier6
- sling9
- slung10
- snail7
- snare6
- snarl7
- sucre9
- sugar8
- suing9
- sulci10
- sural7
- surge8
- ulans8
- ulcer10
- ulnae8
- ulnar8
- ulnas8
- unais7
- uncia10
- uncle11
- unrig9
- uraei6
- urase6
- ureal7
- ureas6
- ureic9
- urges8
- urial7
- urine7
- ursae6
- usage8
- using9
- usnea7
- zaire14
- zeals15
- zeins15
- zincs18
- zings17