iiii iiis iirs iisi iisp iisr ilir ilis ill- illi illp ills illy ilpr ipil ippr ippy ipri ipsi ipsp ipss iri- iril irip iris iriy irps irri irrs irsp isil isis isls isly ispr isps ispy isri isrp issi issp issr isss issy isyl isys liii liir liis lili lill lils lily lip- lipi lipl lipp lips lipy liri lirl lirp lirr lirs liry lisi lisp liss lisy liyl llll llps llyr lppl lprp lpss lpys lrps lrrr lrry ls-r lspl lspr lssp lssr lyly lys- lysi lysl lyss piip pil- pili pill pils pily pipi pipp pips pipy piri pirl pirr pirs piry pisi piss pisy piys plip plis plpp plri plsi plss ppli pppp ppps ppss pri- prii pris prlr prls prps prri prrs prsi prsl prss prys psil psip psis pspi pspp pspr psps psrp psy- psys pyl- pyli pyll pypy pyr- pyri pyrl pyry pyss riis rill rilp rily ripi ripl ripp ripr rips riri rirs risi risp riss rlls rlys rpii rpls rpps rrrr rrsp rsis rslp rsps rssl ryip ryis rysy s-ii sil- sili sill sils sipi sipp sips sipy siri sirp sirr sirs sisi siss sisy siyi sl-i slip slir sllp slpi slpp slps slrp slrs slyp slys spip spir spis splp splr spls spps spri sprs spry spsp spss spy- spyr spys sris srps srsp ssis sslp sspl ssps ssri ssrl ssrs sssi ssss syis syl- syli syll syls syrs syry syss yili yill yips yirr yiss ylli ylls ypir ypsi yrly ysii yspi yyyy