iiii iiio iiis iiit iioi iioo iiop iios iisi iisp iist iitt ioii ioio ioit iooi iooo ioos iops ioso ioto ipop ipos ippo ippy ipsi ipso ipsp ipss ipto ipts iptv ipvs isis isit iso- isop isos isps ispy issi isso issp isss issy isti isto istp ists isty isys itis itoi itoo itos itsi itso itsp itsy itto itty ivys iyos iypt oiii oios oist oiti oooo ooos oops oosi oost ootp oots ooty opii opio opis opit opo- opos oppi oppo opps oppy opsi opsy opti opto opts osii osip osis osoi osoo osos osov ossi osso ossy osti osts osyp osyt otis otit oto- otoo otos otov otoy otpp otso otti otto otts ovi- ovis ovo- ovoo ovot ovpp oyss oyst piip piot pipi pipo pipp pips pipy pisi piso piss pist pisy piti pito pits pitt pity pivo piyo piys poio pois poop poos poot pop- popi popo popp pops popt popy posi poso poss post posy poti poto pots pott poty povo povs poyo poys ppos pppo pppp ppps ppss ppts pptt pptv psip psis psoi psos psov pspi pspp psps psso psst psts pstv psvt psy- psys ptop pvts pyo- pyos pyot pypy pyss pyst pytt s-ii s-iv s-os s-vt siit siop sios siot sipi sipo sipp sips sipt sipy sisi siss sist sisy sit- siti sito sits sitt sity sivi siyi sois soit soop soos soot sooy sopi sopo sopp sops sopy sosi soso soss sost sosv soto sotp sots sovo sovs soyo soys soyt spio spip spis spit spiv spoo spop spos spot spoy spps spso spsp spss spst spto spts spy- spys ssis ssit ssop ssot sspo ssps sspt sssi ssss sstp ssts ssvp st-v stio stip stis stit stoo stop stos stot stoy stpp stps stsi stss stvs stys svit svoy syis sypo syso syss syst sytt sytv tiit tiop tios tip- tipi tipo tipp tips tipt tisi tiso tiss tist titi tito titp tits titt tivi tivo tivy tiyi tiyo to-y tois toit toos toot top- topi topo topp tops topt topv tosi toso toss tost tosy toti toto tots tott toty tovo toyo toys toyt tppp tptp tpyo tsis tsiv tsoi tsop tsos tsoy tspo tsps tspt tssi tsst tsts tsvi tsys ttop ttoy ttss tttt ttys tvis tvos tvss tvtv tvyo typ- typo typp typy tyss tyst tyti tyto tytt tyty viii vios vips visi viso visp viss vist visy viti vito vitt vivi vivo vivy voio voip vois voit voot vopt vosi voso voss voto votp voyi voys vsip vsop vsto vt-i vvvv vyis vyit vyos vyso vyss yips yiss yist yiti yitp yivo yoit yoop yoot yopo yopy yosi yoso yost yott yoyo ypsi ysii ysop yspi yvto yyyy