iiii iiio iiis iioi iioo iiop iios iirs iisi iisp iisr ioii ioio iooi iooo ioos iops iori iors ioso ipix ipop ipos ippo ippr ippy ipri ipsi ipso ipsp ipss iri- irio irip iris irix iriy irop irps irri irrs irsp isis iso- isop isor isos ispr isps ispy isri isrp issi isso issp issr isss issy isys ixos ixxi iyos oiii oios oiry oooo ooos oops oory oosi opii opio opis opo- opor opos oppi oppo opps oppy opry opsi opsy ori- orio oris orix oro- oror oros oroy orpi orps orri orro orrs orry orsi orso orsy orys oryx osii osip osis osoi osoo osor osos osro ossi osso ossy osyp oxi- oxis oxo- oxos oxox oxsi oxxo oxy- oyri oyss piip pipi pipo pipp pips pipy piri piro pirr pirs piry pisi piso piss pisy pixo pixx pixy piyo piys poio pois poix poop poor poos pop- popi popo popp pops popy pori poro porr pors pory posi poso poss posy poxy poyo poyr poys ppos pppo pppp ppps ppss pri- prii pris prix pro- proo prop pros prox prps prri prrs prsi prso prss prys psip psis psoi psos pspi pspp pspr psps psrp psso psy- psys pyo- pyos pypy pyr- pyri pyro pyry pyss riis rios ripi ripp ripr rips riri rirs risi riso risp riss rixo rixy riyo roio roir rois rooi roop roor roos roox ropo rops ropy rori roro rory rosi roso rosp ross rosy roxo roxy roys rpii rpix rpos rpps rrrr rrsp rsis rsos rspo rsps ryip ryis rysy s-ii s-os siop sior sios siox sipi sipo sipp sips sipy siri siro sirp sirr sirs sisi siss sisy sixo sixx siyi soir sois soop soor soos sooy sopi sopo sopp sops sopy sori soro sorr sors sory sosi soso soss soxs soyo soys spio spip spir spis spix spoo spop spor spos spox spoy spps spri spro sprs spry spso spsp spss spy- spyr spys sris sros srps srpx srsp ssis ssop sspo ssps sspx ssri ssrs sssi ssss syis sypo syro syrs syry syso syss xiii xisi xixi xois xoro xorp xors xoxo xoyo xxii xxix xxxi xxxo xxxx xxxy xyr- yips yirr yiss yoix yoop yopo yopy yori yoro yory yosi yoso yoyo ypir ypsi ysii ysop yspi yyyy