ober obes obhs obie obis oboe oboi obor obos obre obrh obri obro obsr obss obuh obus ocbc occc occi oce ocee oche ochi ochs ocis ocos ocre ocro ocrr ocrs ocur oec- oecc oeec oere oers oese ohbe ohcc ohee oher ohhi ohho ohhs ohio ohis ohob ohoh ohos ohre ohso ohss ohus oici oier oies oiii oios oire oisc oise oisu oobe oobi oocr ooer ooes ooho oohs oooh oooo ooos oore oose oosi oous orbb orbe orbi orbo orbs orbu orce orch orci orco orcs ore- oreb orec oreh oreo orer ores orhe orhs ori- oric orie orio oris oro- oroe oror oros orri orro orrs orse orsi orso orsu orub orus osbe oscc osce osci osco osec osee oseh osei oser oses oshc oshe oshi osho oshs oshu osie osii osis osoi osoo osor osos osro ossb osse ossi osso ossu oubs oucc ouch ouer ouie ouii ouir ouis our- oure ouro ours ouse ouu- rbbb rbbr rbbs rbhs rbis rboh rbss rcbc rcbo rccb rccc rccs rchb rchs rcic rcis rcos rcsc rcsi rcss rebb rebe rebo rebs rebu recc rece rech reci recr recs recu reeb rees rehb rehe rehi rehs reii reir reis reiu reos reou rere reri rero rers reru rese resh resi reso ress reue reus reuu rhce rheb rhee rheo rhes rhhs rhib rhio rhob rhoc rhoh rhos rhue rhus rib- ribe ribo ribs ribu ricc rice rich rico rics rier ries rieu riho rihs riis rios riou rire riri rirs risc rise rish risi riso riss risu riue rius rob- robb robe robi robo robs robu rocc roce roch roco rocs roer roes rohe rohr rohs rohu roio roir rois roiu roob rooi roor roos rorc rore rori roro roru rosc rose rosh rosi roso ross roub roue rouh rous rrhs rrrr rsbi rscc rsch rscs rsee rshs rsis rsos rsre rubb rube rubi rubs rubu ruce ruch ruci ruer rues ruhe ruhh ruhi ruhr ruhs ruis rurc rure ruri ruro rurs ruru ruse rush rusi ruso russ rusu s-ib s-ic s-ii s-os sbbs sbcc sbcs sber sbhc sbhs sbic sbor sbse sbsi sbus scbi sccc scce sccs scec scee scer sch- sche schh schi scho schr schs sci- scic scie scio scir scis scob scoh scoo scor scr- scrc scre scri scrs scsc scsh scsi scso scsr scsu scub scur se-c se-e se-h se-i se-o se-s se-u sebe sebi sebo sebs sec- secc sece sech seco secr secs secu seeb seec seeh seer sees seeu sehe sehr sehs seie seih seii seir seis seiu seoc seoi serb serc sere seri sero serr sers seru sesc sese sesh sesi seso sess seui seur shbs shcc she- sheb shee sheh sheo sher shes sheu shhh shhs shib shie shih shii shio shir shis shiu shoe shoo shor shos shou shre shri shrs shsc shub shue shui shur shus shuu sibc sibe sibi sibo sibs sibu sicc sice sich sici sico sics sicu siec sier sies sihi sihr sihs sihu sioe sior sios siou sirc sire siri siro sirr sirs siru sisc sise sish sisi siss sisu siue siui sius sobe sobo sobr sobs sobu soce soch soci soco socr socs soec soeo soes sohh soho sohs sohu soic soie soir sois soor soos sorb sore sorh sori soro sorr sors soru sose sosh sosi soso soss soue sour sous srbc srcc srch sreb srec sreo sres srhs srib sris sros srub ssbr sscc ssce ssci sscs ssec ssee sses sshs ssis ssoc ssrc ssri ssrs sssb sssc sssh sssi ssss sub- subb subh subi subo subs suc- succ such suci sucr sucs suee suer sues sueu suhb suhi suho suhr suie suio suir suis suoh suor suos sur- surc sure suri suro surr surs suru sus- suse susi suso suss susu suus u-ie ubbe ubbi ubbo uber ubic ubii ubir ubis uboc ubos ucbc ucci uces uche uchi ucho uchs ucio ucos ucrc ucsb ucsc ucsu ueir uers uess uher uhoh uhrs uhss uhuh uies uirr uise uocc uor- uore urbe urbi urbs urch urci ure- ureh ures urho urib uric urie uris uriu uro- uroo urre urrh urri urse ursi urso urss ursu urur urus usbc usbe usbr usbs uscc usce usch usco uscs usee user uses ushi usho ushr ushs ushu usie usis usoc usoe usoi usos ussb ussc usse ussr usss ussu usui usus uuoc uuri uusi uuuu