eeee eees eeps eers eese eete eets epee eper epes eppp epps eprp eprs epsp epss epte erer eres eret erpe erps erre errs erse erst erts esee eser eses eset espe espp esps esse essp esst este estp estr ests etee eter etes etre ette peep peer pees peet pepe peps per- pere perp perr pers pert pese pess pest pete petr pets pett pper pppp ppps ppss ppts pptt pre- pree prep pres pret prps prrs prse prss prtp prtr pspp pspr psps psrp psse psst psts pter reep rees reet repe repp repr reps rept rere rers rert rese resp ress rest rete retr rets rett rpet rpps rpts rrrr rrsp rsee rsps rsre rstp rsts rtee rtes rtps rtss rttp rtts se-e se-s se-t seep seer sees seet sepe sepp sepr seps sept sere serp serr sers sert sese sess sest set- sete sets sett spee sper spes spet spps sprs spse spsp spss spst sptr spts sres srps srpt srsp srtp srtr ssee ssep sses sset sspe ssps sspt ssrs ssss sstp ssts stee step ster stes stet stpp stps stre strs stss sttr teer tees teet tepe tepp ter- tere terp terr ters tese tesp tess test tete tetr tets tett tper tppp tppr tprs tpte tptp tptr tre- tree tres tret trpe trpp trps trst trte trtr tses tset tsps tspt tsse tssr tsst tsts tter ttss tttt