nuru nusi nuss nusu obbo obin obis oboi obon obor obos obri obro obsn obsr obss obus ocbc occc occi occn ocin ocis ocms ocom ocon ocos ocro ocrr ocrs ocum ocur oici oiii oimb oins oion oios oisc oism oisu oium ombo ombu omic omim omin omio omis omn- omni omo- omoi omon omoo omor omri omro omsi omsn omuo omus onc- onco onic onir onis onni onno onon onor onos onsc onso onur onus oobi oocr ooms oons oooo ooos oosi oous orbb orbi orbo orbs orbu orci orco orcs ori- oric orin orio oris ormn ormo ornc orni orno orns oro- orom oron oror oros orri orro orrs orsi orso orsu orub orum orus oscc osci osco osii osim osin osis osm- osmo osno osnr osoi osoo osor osos osro ossb ossi osso ossu osum osun oubs oucc ouii ouin ouir ouis oumi oun- our- ourn ouro ours ouu- rbbb rbbr rbbs rbis rbms rbss rcbc rcbo rccb rccc rccs rcic rcis rcms rcnr rcon rcos rcsc rcsi rcss rib- ribo ribs ribu ricc rico rics riin riis rimi rimm rimo rims rimu rinn rino riom rion rios riou riri rirs risc risi rism riso riss risu rius rmbs rmon rmsc rnbr rnco rncs rnin rob- robb robi robo robs robu rocc roco rocs roin roio roir rois roiu romb romi romm romo roms ronc roni rono rons roob rooi room roon roor roos rorc rori roro roru rosc rosi roso ross roub roum roun rous rrmc rrrr rrum rrun rsbi rscc rscn rscs rsis rsnn rsno rsnr rsos rsum rubb rubi rubs rubu ruci ruin ruis rumb rumi rumm rumo rums runc runi runn runo runs rurc ruri ruro rurs ruru rusi ruso russ rusu ruun s-ib s-ic s-ii s-os sbbs sbcc sbcs sbic sbmc sbor sbsi sbus scbi sccc sccm sccs sci- scic scim scin scio scir scis scmc scmm scmo scms scnr scob scom scon scoo scor scr- scrc scri scrn scrs scsc scsi scsn scso scsr scsu scub scum scun scur sibc sibi sibo sibs sibu sicc sici sicm sico sics sicu siim simi simm simo sims sini sinn sino sins sinu sion sior sios siou sirc siri siro sirr sirs siru sisc sisi siss sisu siui sium sius smbc smcc smic smin smis smnc smoc smon smos smsc smsn smss smur smus sncc snco snib snir snns snob snoc snom snoo snor snos snrs snub snum snur snus sobo sobr sobs sobu soci socm soco socr socs soic soim soin soir sois somb somi somm somn somo son- soni sono sons sonu soom soon soor soos sorb sori sorm sorn soro sorr sors soru sosi soso soss soum soun sour sous srbc srcc srib srim sris srmc srni srnn srno sros srub ssbn ssbr sscc ssci sscs ssin ssis ssmc ssns ssoc ssrc ssri ssrm ssrs sssb sssc sssi sssm ssss sub- subb subi subm subo subs suc- succ suci sucr sucs suin suio suir suis sum- sumi sumo sums sumu sun- sunb suni sunn suno suns sunu suor suos sur- surc suri surn suro surr surs suru sus- susi suso suss susu suum suus ubbi ubbo ubic ubii ubir ubis uboc ubon ubos ucbc ucci ucin ucio ucmc ucom ucon ucos ucrc ucsb ucsc ucsm ucsu uims uirr umb- umbi umbo ummo umms umno umor umri umsu umus uncc unci unco uncs uni- unic unii unin unio unir unis unmc unmr unni unno unns unon unos unro unrs uns- unsc unso unum unus uocc uomo uor- urbi urbs urci urib uric urim urin uris uriu urmi urni urns uro- urom uroo urri ursi urso urss ursu urum urun urur urus usbc usbr usbs uscc uscm usco uscs usim usin usis usmc usmm usms usnc usno usnr usnu usoc usoi usos ussb ussc ussr usss ussu usui usun usus uuni uuno uuoc uuri uusi uuuu