d-rod ddddd diddu didin didio didno didon diino dindi dindo dinio dino- dinon dinur dioid dioni diono dioon dioro diouf dirfi diurn do-do dodon dodoo dodro dofor doido dondi dondo donon donor doodo doofi dooin doorn dorff dorid dorin dorio dorno doron dorud doufu douin douro dridu driff drinn drino droff droid drood droof droon drori droun druid druri duddo dudin dudon dudou dufur duino dundi dundo dunin dunno dunod dunun durif durin durio durno duron fidor fiini finif finno fiond fionn fiord fiori firon firou fnord fodor foind foini foir- fondi fondo fondu fonio fonni foord ford- fordo forio forni forno forro forud forur found fourd fouro frodo froid frond frood frorn froud fu-fu fuddu fund- fundi fundo fundu fuoni fuorn furin furio furir furo- furor furud fuudo iddon ididn idifu idio- idodi idood idoru idron idunn if-- iffou ifido ifin ifind ifood ifund iiiii iiuni indi- indin indio indir indo- indor indri indru indur infin info- infor infun iniid inini inio inio- inion inniu inoff inonu inoor inori inour inrio inrun inund inurn iodid iodin iodo- iono- ioooi ioooo iorio irid- irido irind irinn irion irono irori irour iufni iunno ndour nduru nidor nifon niidu ninon ninur niono niord nioro nnooo no-do no-fi no-no nodi- nodof nofor nofou nofun non-u nondo nonin nonio nonni nonno noonu noord noori nordo norid norin norio noron norro norun nouni nouri nroff nu-nu nudi- nudur nunni nunon nunun nuoro nurin nurri nurun oddur odiid odori odour odrin odudu oduro offin offir offof offon offun ofnod ofono ofori oforn ofour oidor oino- oinoi oiron onin onion onir- oniro onoff onond onoon onorn onour onrio ooioo oonin ooooo ordon ordro orfor orino orion orni- ornon orodo orono orrin oruro oudin oudon ouir- ouoro ourno ri-fi ridin ridof rindi rindr rindu rioni ro-ro roddi rodin rodon rodor rodri rofor rondo ronin ronno roodi roodu roond rorid round rudin rudno ruffo rufi- rufio rufo- ruino ruiru rundi rundu runin runo- runof runon u-n-i u-nii ufofu ufund uiro undid undri undun undur unfun unfur unido unifi unini uninn union unnun unnur unoor unorn unrid unrun unurn urdoi urin- urour ururi uuuuu