iiii iiis iiit iisi iisp iist iitt ilis ilit ill- illi illp ills illt ilts ipil ipsi ipsp ipss ipts iptv ipvs isil isis isit isls isps issi issp isss isti istp ists itil itis itll itsi itsp liii liis liiv lili lill lils lilt lip- lipi lipl lipp lips lisi lisp liss list liti litl lits litt livi livs llll llps lppl lpss lptv lspl lssp lsts lstv ltps ltsi ltsp lttv lvii lviv lvsv piip pil- pili pill pils pilt pipi pipp pips pisi piss pist piti pits pitt plip plis plit plpp plsi plss pltt plvi ppli pppp ppps ppss ppts pptt pptv psil psip psis pspi pspp psps psst psts pstv psvt pvlv pvts s-ii s-iv s-vt siit sil- sili sill sils silt sipi sipp sips sipt sisi siss sist sit- siti sits sitt sivi sl-i slip slit sllp slpi slpp slps slst slts spip spis spit spiv splp spls spps spsp spss spst spts ssis ssit sslp sslt sspl ssps sspt sssi ssss sstl sstp ssts ssvp st-v stil stip stis stit stlt stpp stps stsi stss stvs svil svit tiit till tils tilt tip- tipi tipp tips tipt tisi tiss tist titi titp tits titt tivi tlli tpls tppp tptp tsis tsiv tsps tspt tssi tsst tsts tsvi ttss tttt tvil tvis tvss tvtv viii vili vill vils vilt vips visi visp viss vist viti vitt vivi vlli vlsi vlvt vplp vsip vssl vt-i vtls vtvl vvvv