iiis iioi iioo iios iirc iirs iisc iisi iisr iisu iiuc iobi ioci ioii ioio iooi iooo ioos iori iors ioso iosu ious ircc ircs ircu irhs iri- iric irio iris irob iroc iroh irrc irri irrs irus iscc isch isci isco iscr iscs iscu ishi ishr ishs isic isis iso- isoc isor isos isri issc issh issi isso issr isss issu isuh isus iucc iuiu iuss obbo obhs obis oboi obor obos obrh obri obro obsr obss obuh obus ocbc occc occi ochi ochs ocis ocos ocro ocrr ocrs ocur ohcc ohhi ohho ohhs ohio ohis ohob ohoh ohos ohso ohss ohus oici oiii oios oisc oisu oobi oocr ooho oohs oooh oooo ooos oosi oous orbb orbi orbo orbs orbu orch orci orco orcs orhs ori- oric orio oris oro- oror oros orri orro orrs orsi orso orsu orub orus oscc osci osco oshc oshi osho oshs oshu osii osis osoi osoo osor osos osro ossb ossi osso ossu oubs oucc ouch ouii ouir ouis our- ouro ours ouu- rbbb rbbr rbbs rbhs rbis rboh rbss rcbc rcbo rccb rccc rccs rchb rchs rcic rcis rcos rcsc rcsi rcss rhhs rhib rhio rhob rhoc rhoh rhos rhus rib- ribo ribs ribu ricc rich rico rics riho rihs riis rios riou riri rirs risc rish risi riso riss risu rius rob- robb robi robo robs robu rocc roch roco rocs rohr rohs rohu roio roir rois roiu roob rooi roor roos rorc rori roro roru rosc rosh rosi roso ross roub rouh rous rrhs rrrr rsbi rscc rsch rscs rshs rsis rsos rubb rubi rubs rubu ruch ruci ruhh ruhi ruhr ruhs ruis rurc ruri ruro rurs ruru rush rusi ruso russ rusu s-ib s-ic s-ii s-os sbbs sbcc sbcs sbhc sbhs sbic sbor sbsi sbus scbi sccc sccs sch- schh schi scho schr schs sci- scic scio scir scis scob scoh scoo scor scr- scrc scri scrs scsc scsh scsi scso scsr scsu scub scur shbs shcc shhh shhs shib shih shii shio shir shis shiu shoo shor shos shou shri shrs shsc shub shui shur shus shuu sibc sibi sibo sibs sibu sicc sich sici sico sics sicu sihi sihr sihs sihu sior sios siou sirc siri siro sirr sirs siru sisc sish sisi siss sisu siui sius sobo sobr sobs sobu soch soci soco socr socs sohh soho sohs sohu soic soir sois soor soos sorb sorh sori soro sorr sors soru sosh sosi soso soss sour sous srbc srcc srch srhs srib sris sros srub ssbr sscc ssci sscs sshs ssis ssoc ssrc ssri ssrs sssb sssc sssh sssi ssss sub- subb subh subi subo subs suc- succ such suci sucr sucs suhb suhi suho suhr suio suir suis suoh suor suos sur- surc suri suro surr surs suru sus- susi suso suss susu suus ubbi ubbo ubic ubii ubir ubis uboc ubos ucbc ucci uchi ucho uchs ucio ucos ucrc ucsb ucsc ucsu uhoh uhrs uhss uhuh uirr uocc uor- urbi urbs urch urci urho urib uric uris uriu uro- uroo urrh urri ursi urso urss ursu urur urus usbc usbr usbs uscc usch usco uscs ushi usho ushr ushs ushu usis usoc usoi usos ussb ussc ussr usss ussu usui usus uuoc uuri uusi uuuu

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