iiii iiio iiit iioi iioo iiop iitr iitt ioii ioio ioit iooi iooo iori ioto ipop ippo ippr ipri ipto ipur iput iri- irio irip irop irri irti irtp itoi itoo itor itou itri itto itup itur iuiu iupp oiii oirt oiti oooo oort ootp opii opio opit opo- opor oppi oppo opti opto ori- orio orit oro- oror orot orpi orri orro orto orup otit oto- otoo otor otpp otro otti otto ottu otur ouii ouir ouit our- ouro ourt out- outi outo ouu- piip piot pipi pipo pipp piri piro pirr piru piti pito pitr pitt pitu poio poop poor poot pop- popi popo popp popt pori poro porr port poti poto pott potu poui poup pour pout pppo pppp ppru pptt ppur pri- prii pro- proo prop prot prou prri prti prtp prtr prut pruu ptop ptui puir puit puiu pupi pupu pur- puri puro purp purr puru put- puti puto putt putu riot riou ripi ripp ripr ript riri riti rito ritt ritu roio roir roit roiu rooi roop roor root ropo rori roro rort roru roti roto rotr rott roup rout rpii rrrr rttp ruit rupp rupt ruri ruro rurp ruru ruti ruto rutt rutu tiit tiiu tiop tiou tip- tipi tipo tipp tipt tipu tiri tiro tirr tiru titi tito titp titt titu toit toor toot top- topi topo topp topt topu tori toro torp torr tort toru toti toto totr tott toui toup tour tout tpir tppp tppr tptp tptr tput tri- trio trip trit troi troo trop trot trou trpp trtr trut truu ttop tttt tuit tuiu tuor tupi tupo tupu turi turo turp turr turt turu tuti tuto tutt tutu tuuo u-rp uipi uirr uor- upor uppp uppu upri upto upup uriu uro- uroo urpo urri urup urur urut utor utri utti utto uttu uuri uuuu