eeee eees eeps eers eese eesi eiei eier eies eipr eire eirs eise eiss epee eper epes epi- epie epip epis eppp epps eprp eprs epsi epsp epss epus erei erer eres erev erie eris eriu erpe erps erre errs erse ersi erur erus eruv erve ervi esee eser eses esie esis espe espi espp esps esri esse essi essp essu esui esus euer eur- eure euse ever eves evie evir evre evrs ieie iere ieri iers iesi iesr iesu iies iiie iiii iiis iirs iisi iisp iisr iisu iper ipes ipie ippr ipri ipse ipsi ipsp ipss ipur ipus ipvs iree irer ires iri- irie irip iris irpe irps irre irri irrs irse irsp irus irvs isee isep iser ises isie isis ispe ispr isps isri isrp isse issi issp issr isss issu isup isus iuiu iupp iuse iuss iver ives ivie ivre ivrs ivue peep peer pees peev peip peir peis pepe pepi peps per- pere peri perp perr pers peru perv pese pesi pess pesu peur piep pier pies piip pipe pipi pipp pips pire piri pirr pirs piru pise pisi piss pisu pius pper ppie pppp ppps ppru ppss ppur pre- pree prep pres preu prev pri- prie prii pris priv prps prri prrs prse prsi prss prsv prue prus pruu psei psip psis pspi pspp pspr psps psrp psse pu-e puer pueu puir puis puiu pupe pupi pups pupu pur- pure puri purp purr purs puru pusi puss reep rees reev reii reir reis reiu repe repi repp repr reps repu rere reri rers reru rese resi resp ress reue reup reus reuu reve revi revp revs riep rier ries rieu riis ripe ripi ripp ripr rips rire riri rirs rise risi risp riss risu riue rius rive rivp rivs rpii rpps rrrr rrsp rsee rsis rsps rsre rsvp ruer rues ruis rupe rupp rure ruri rurp rurs ruru ruse rusi russ rusu ruve ruvi ruvu rver rvsp s-ii s-iv se-e se-i se-s se-u seep seer sees seeu seie seii seip seir seis seiu sepe sepi sepp sepr seps sepu sere seri serp serr sers seru serv sese sesi sess seui seur seve sevi sier sies sipe sipi sipp sips sire siri sirp sirr sirs siru sise sisi siss sisu siue siui sius sive sivi spee sper spes spie spip spir spis spiv spps spri sprs spse spsp spss spue spui spur spus sres sris srps srsp ssee ssep sses ssis sspe ssps ssri ssrs sssi ssss ssvp suee suer sues sueu suev suie suir suis sup- supe supp supr sups supv sur- sure suri surp surr surs suru surv sus- suse susi susp suss susu suus suvi suvs svir u-ie u-rp ueir uepi uers uess uies uipi uirr uise upie upis uppe uppp uppu upri upse upsi upup ure- ures urie uris uriu urre urri urse ursi urss ursu urup urur urus urve usee user uses usie usip usis uspp usps usse ussr usss ussu usui usus uuri uusi uuuu uver uvis uvri uvvu veep veer vees veie veii veip veir veis vepe vepr veps ver- vere veri vers vese vesi vess veur veve vevi vier vies vieu viii vipr vips vire viri virr viru vise visi visp viss visu viue vive vivi vris vrse vrsi vsee vses vsip vsrp vsse vues vuir vups vurp vuse vver vvvv