Solutions :

3-letter words (1 point): 34

AIR; AXE; AYU; EKE; ERE; ERK; ERR; IRE; IRK; KEP; KET; PEA; PEP; PER; PES; PIA; PIE; PIP; PIR; PIX; PRE; PRY; PYA; REP; RES; RET; RIA; RIP; RYA; SER; SPY; TRY; YAE; YIP.

4-letter words (1 point): 48

AIRT; AIRY; AYRE; EKES; ERES; ESPY; IRES; KEPI; KEPS; PEKE; PEPS; PERE; PERI; PERK; PERP; PERT; PIPE; PIPS; PIPY; PREP; PYRE; REKE; REPP; REPS; RIPE; RIPP; RIPS; RYPE; SEKT; SERE; SERK; SERR; SPEK; SPIE; SPRY; TREK; TRES; TRIE; TRIP; TRYP; TYPE; TYPP; TYRE; YIPE; YIPS; YIRK; YIRR; YURT.

5-letter words (2 points): 34

AYRES; AYRIE; KERRY; PERPS; PERRY; PIPER; PIPES; PREPS; PYRES; QUYTE; REKES; REPPS; RETRY; RIPES; RIPPS; RYPER; SEPIA; SERRY; SPEIR; SPIRE; SPIRT; SPIRY; SPYRE; TEREK; TERES; TERRY; TRIPE; TRIPS; TRIPY; TRYPS; TYPES; TYPPS; TYRES; YIPES.

6-letter words (3 points): 4

RETYPE; TRIPES; TRIPPY; YIPPER.

7-letter word (7 points): 1

RETYPES.