dddd ddpo didi dido diii diiv din- dini dinn dino dion diop dior dipn dipo dipp dird dirr divd divi divo dnpo dod- dodd dodi dodo doid doin dond doni donn dono donp donr dood doon doop door dopo dopp dopr dord dori dorn doro dorp dorr dovi dpin dpni drin drip drno drod dron drop drvn dvdr dvi- dvii dvin dvir dvno dvor dvrp i-no iddo idid idin idio idir idno idon idro idvd iiii iiio iino iioi iioo iiop ind- indi indo inid inni inno innr ino- inoi inon inor inp- inpi inpp inri inro iod- iodd iodo ioii ioio ioni ionn iono iooi iooo iori ipdi ipid ipin ipod ipop ippo ippr ipri irdo irdp iri- irid irin irio irip irod iron irop irov irri ivdr ivin ivod ivon ivor n-ii nddo ndnp ndop ndor ndpd ndpr ndri nidd nidi nido niip niir nind nini nino nion nioo nipr niro nirv nivo nivr nnnn nnpi nnpr nodi nodo noid noin noio noir non- noni nonn nono noo- noon nooo noop noor noov nor- nord nori norn noro norr norv nov- novi novo npin npiv npov nppd npri nron nrpn nrrd nvir nvpi oddd oddi odin odio odir odon odoo odop odor odrp oido oiii oion ondi ondo onir onni onno onod onon onor oodi ooid oooo oord opii opin opio opo- opon opor oppi oppo ordn ordo ori- orid orin orio orni orno oro- oron oror orpi orri orro orvr ovi- ovid ovni ovo- ovod ovon ovoo ovpp pdpn pdpr pido piip pind pini pinn pino pinp pion pipi pipo pipp piri pirn piro pirr pivo pnin pnon pnpo pnpp pnro pod- podd podi podo poid poin poio pond poni pono ponp pood poon poop poor pop- popi popo popp pori porn poro porr povo ppid ppod pppd pppn pppo pppp pri- prid prii prin priv prnd prnp pro- prod pron proo prop prov prpd prrd prri rdio ridd ridi rido riin rind rinn rino rion ripd ripi ripp ripr riri rivo rivp rndp rnin rnod rnpv rodd rodi rodo roid roin roio roir rond roni rono rood rooi roon roop roor ropo rori roro rovi rovo rpdp rpii rpon rppn rrrr vdio vidi vido viii vind vini vino vion vipr viri viro virr vivi vivo vnir vodo void voin voio voip voir vond voni vonn voor vor- vord vori voro vpdn vpon vpro vrdi vrin vrio vrnn vron vrpn vvvv