dddd ddpo didi dido didu diii diop dior diou dipo dipp dipu dird dirr dod- dodd dodi dodo doid dood doop door dopo dopp dopr dord dori doro dorp dorr doru doud doup dour drip drod drop drou drui drup druu dudd dudo dudu duid duir duo- dupo duri duro duru duur iddo idid idio idir idro iduo iiii iiio iioi iioo iiop iod- iodd iodo ioii ioio iooi iooo iori ipdi ipid ipod ipop ippo ippr ipri ipur irdo irdp iri- irid irio irip irod irop irri iuiu iupp oddd oddi odio odir odiu odoo odop odor odou odrp odur oido oiii oodi ooid oooo oord opii opio opo- opor oppi oppo ordo ordu ori- orid orio oro- oror orpi orri orro orup ouii ouir our- ouro ouu- pdpr pido piip pipi pipo pipp piri piro pirr piru pod- podd podi podo podu poid poio pood poop poor pop- popi popo popp pori poro porr poud poui poup pour ppid ppod pppd pppo pppp ppru ppur pri- prid prii pro- prod proo prop prou prpd prrd prri prud pruu pudo pudu puid puir puiu pupi pupu pur- puri puro purp purr puru rdio ridd ridi rido riou ripd ripi ripp ripr riri rodd rodi rodo roid roio roir roiu rood rooi roop roor ropo rori roro roru roud roup rpdp rpii rrrr rudd rudi rudo rudp ruid rupp rurd ruri ruro rurp ruru ruud u-rp uddi udid udir udoo udop udpd uipi uirr uor- updo upor uppp uppu upri upup urdu uriu uro- uroo urpo urri urup urur uuri uuuu