h-ii hhhh hhhs hhip hihi hiho hiis hipo hipp hips hish hiss hoho hoip hois hoix hoop hoos hoox hopi hopo hopp hops hopx hosh hosp hoss hphs hpps hpss hshs hsps hssp ihis ihop ihss iiii iiio iiis iioi iioo iiop iios iisi iisp ioii ioio iooi iooo ioos iops ioso ipix ipoh ipop ipos ippo ipsi ipso ipsp ipss ishi ishs isis iso- isop isos isps issh issi isso issp isss ixos ixxi ohhi ohho ohhs ohio ohis ohoh ohos ohso ohss oiii oios ooho oohs oooh oooo ooos oops oosi ophi ophs opii opio opis opo- opos oppi oppo opps opsi oshi osho oshp oshs osii osip osis osoi osoo osos ossi osso oxi- oxis oxo- oxos oxox oxsi oxxo phhs phi- phip phis phoh phoo phos phox piip pipi pipo pipp pips pish pisi piso piss pixo pixx pohs poio pois poix pooh poop poos pop- popi popo popp pops posh posi poso poss pphi pphs ppih ppos pppo pppp ppps ppsh ppss pshs psip psis psoi psos psph pspi pspp psps psso s-ii s-os shhh shhs shih shii shio ship shis shoo shop shos shox shps sihi sihs siop sios siox sipi sipo sipp sips sish sisi siss sixo sixx sohh soho sohp sohs sois soop soos soph sopi sopo sopp sops sosh sosi soso soss soxs sphs spio spip spis spix spoo spop spos spox spps spso spsp spss sshs ssis ssop sspo ssps sspx sssh sssi ssss xhhp xhoi xiii xiph xisi xixi xois xoxo xxii xxix xxxi xxxo xxxx