INTERLISP

el en er es et in is it li ne pe pi re si ti

els ens ern ers ins ire its lei les let lie lin lip lis lit net nil nip nit pen per pes pet pie pin pis pit psi pst rei rep res ret rin rip sei sel sen ser set sin sip sir sit sri tel ten tie til tin tip tis

erns erst inti ires iris isle leis lens lent lept lest lets lien lier lies line lins lint lipe lips lire liri lisp list lite lits nest nets nils nips nisi nite nits pein pelt pens pent peri pert pest pets pier pies pile pili pine pins pint pirn pits plie rein reis rent reps rest rets riel rile rins ripe rips rise rite sent sept silt sine sipe sire site slip slit snip snit spin spit step stir tels tens tern tier ties tile tils tine tins tipi tips tire tirl tres trip