iiii iiio iiit iioi iioo iiop iitr iitt ilio ilir ilit ill- illi illo illp illt iloo ilot ilpr ioii ioio ioit iolo iooi iooo iopl iori ioto ipil iplo ipop ippo ippr ipri ipto iri- iril irio irip irop irri irti irtp itil itll itoi itol itoo itor itri itto liii liir lili lill lilo lilt lio- lior lip- lipi lipl lipo lipp liri lirl liro lirp lirr lirt liti litl lito litr litt llll lloo loir loit loli loll lolo lool loop loor loot lopi lopp lori loro loti lotl loto lotr lott lppl lprp lroi lrrr lttr oiii oirt oiti olio olit olli ollo olor olot oolo oooo oort ootp opii opio opit opo- opor oppi oppo opti opto ori- oril orio orit orlo oro- oror orot orpi orri orro orto otit oto- otoo otor otpp otro otti otto piip pil- pili pill pilo pilt piot pipi pipo pipp piri pirl piro pirr piti pito pitr pitt plio plip plit ploo plop plot plpp plri pltt poil poio poli poll polo polt pool poop poor poot pop- popi popo popp popt pori poro porr port poti poto pott ppli pplo pppo pppp pptt pri- prii prlr pro- prol proo prop prot prri prti prtp prtr ptol ptop rill rilo rilp riol riot ripi ripl ripp ripr ript riri riti ritl rito ritt roil roio roir roit roll rolo rolp rolt rooi rool roop roor root ropo rori roro rort roti rotl roto rotr rott rpii rrrr rtlt rttp tiit till tilo tilr tilt tiop tip- tipi tipo tipp tipt tiri tirl tiro tirr titi tito titp titt tlli toil toit tol- toli toll tolo tolt tool toor toot top- topi topo topp topt tori toro torp torr tort toti toto totr tott tpir tpol tppp tppr tptp tptr tri- tril trio trip trit troi troo trop trot trpp trtr ttop tttt