iiii iiis iisi iisp iisu ilis ill- illi illp ills ilus ipil ipsi ipsp ipss ipus isil isis isls isps issi issp isss issu isup isus iuiu iupp iuss liii liis lili lill lils lilu lip- lipi lipl lipp lips lipu lisi lisp liss lisu lius llll llps lppl lpss lspl lssp luis luli lull lulu lupi lupu lusi luss luup piip pil- pili pill pils pilu pipi pipp pips pisi piss pisu pius plip plis plpp plsi plss plup plus ppli pppp ppps ppss psil psip psis pspi pspp psps puis puiu puli pull pulp puls pulu pupi pupl pups pupu pusi puss s-ii sil- sili sill sils silu sipi sipp sips sisi siss sisu siui sius sl-i slip sllp slpi slpp slps slsu slup spip spis splp spls spps spsp spss spui spus ssis sslp sspl ssps sssi ssss suis sul- suli sull sulp sulu sup- supp sups sus- susi susp suss susu suus uipi ulli ulul ulus upis uppp uppu upsi upup usip usis uslp uslu uspp usps usss ussu usui usul usus uulu uusi uuuu