-ic bbb bbc bbh bbi bbo bbr bbs bcb bcc bch bci bco bcr bcs bhb bhc bhh bhi bho bhr bhs bi- bib bic bih bii bio bir bis bob boc boh boi boo bor bos brb brh bri bro brr brs bsb bsc bsh bsi bso bsr bss c-- cbb cbc cbh cbi cbo cbr cbs ccb ccc cch cci cco ccr ccs ch- chb chc chh chi cho chr chs ci- cib cic cih cii cio cir cis co- cob coc coh coi coo cor cos crb crc crh cri cro crr crs csb csc csh csi cso csr css h-i hbb hbc hbh hbi hbo hbr hbs hcb hcc hch hci hco hcr hcs hhb hhc hhh hhi hho hhr hhs hib hic hih hii hio hir his hob hoc hoh hoi hoo hor hos hr- hrb hrc hrh hri hro hrr hrs hsb hsc hsh hsi hsr hss ibb ibc ibh ibi ibo ibr ibs icb icc ich ici ico icr ics ihb ihc ihh ihi iho ihr ihs iib iic iih iii iio iir iis io- iob ioc ioh ioi ioo ior ios ir- irb irc iri iro irr irs is- isb isc ish isi iso isr iss o-i ob- obb obc obh obi obo obr obs oc- ocb occ och oci oco ocr ocs ohc ohh ohi oho ohr ohs oib oic oii oio oir ois oo- oob ooc ooh ooi ooo oor oos or- orb orc orh ori oro orr ors os- osb osc osh osi oso osr oss rbb rbc rbh rbi rbo rbr rbs rcb rcc rch rci rco rcr rcs rh- rhb rhc rhh rhi rho rhr rhs rib ric rih rii rio rir ris rob roc roh roi roo ror ros rrb rrc rrh rri rrr rrs rsb rsc rsh rsi rso rsr rss sbb sbc sbh sbi sbo sbr sbs scb scc sch sci sco scr scs sh- shb shc shh shi sho shr shs sib sic sih sii sio sir sis sob soc soh soi soo sor sos sr- srb src srh sri sro srr srs ss- ssb ssc ssh ssi sso ssr sss

bbbb bbbs bbch bbci bbhs bbrc bcbc bcbs bccc bcci bccs bchs bcis bcor bcos bcrs bcsc bcss bhcc bhhs bhir bhoi bhor bibb bibi bibo bibs bicc bich bici bico bics bihi bihs biis bio- bioc bioi bios birb biri biro birr birs bis- bisc bish biso biss bobb bobi bobo bobs boch boco bocs boho bohr bohs boi- boii bois boob booc booh boor boos bor- borh bori boro borr bors bosc bosh bosi boso boss brcb brhs bric brih brio bris brob broc broh broo bror bros brrr brrs brsb brsr bsci bscs bshs bsic bsos bssc c-bo cbbc cbbs cbcc cbcr cbcs cbhs cbir cbrh cbsc cbsi ccbc cccb cccc ccci cccs cchr cchs ccic ccii ccir ccis ccob ccoc ccrc ccri ccrs ccsi ccss chch chci chcs chhs chib chic chih chir chis choc choh choi choo chor chos chrb chrc chro chrr chrs chsc chsh chsi chsr cibc cibi cibo cicc cich cici cico cicr cics cihr cihs ciii ciis ciob cior cios cirb circ cirh ciri ciro cirr cirs cis- cisc cish cisr ciss cobb cobh cobi cobo cobs coch coco coho cohs coir cois coob cooh coos cor- corb corc cori coro corr cors cosc cosh cosi coso coss crbc crcc crcr crhs crib cric cris crob croc croh croo cror crss cscb cscc csch csci csco cscr cscs cshs csib csio csir csis csob csor csos csrc csrs cssr h-ii hbbs hbhs hbic hbio hboc hbos hbrs hbss hcbc hcbs hccb hccc hcch hccs hchi hchs hcis hcsc hcso hcss hhhh hhhs hi-c hibi hicc hich hico hics hihc hihi hiho hiis hiob hioc hiri hiro hirs hisb hish hiss hobo hobs hoch hocr hocs hoho hoir hois hoor hoos horc hori horo horr hors hosh hoss hrhs hrib hrob hros hrrc hrso hsbc hscc hsci hshs hsob ibcs ibis ibos ibrc ibri ibro ibss icbc icbs iccb iccc icci icco iccr iccs ichc ichi icho ichr ichs icis icoc icor icos icrc icrr icrs icsb icsc icsh icsi icsr icss ihcc ihis ihob ihrc ihss iiii iiio iiis iioi iioo iios iirc iirs iisc iisi iisr iobi ioci ioii ioio iooi iooo ioos iori iors ioso ircc ircs irhs iri- iric irio iris irob iroc iroh irrc irri irrs iscc isch isci isco iscr iscs ishi ishr ishs isic isis iso- isoc isor isos isri issc issh issi isso issr isss obbo obhs obis oboi obor obos obrh obri obro obsr obss ocbc occc occi ochi ochs ocis ocos ocro ocrr ocrs ohcc ohhi ohho ohhs ohio ohis ohob ohoh ohos ohso ohss oici oiii oios oisc oobi oocr ooho oohs oooh oooo ooos oosi orbb orbi orbo orbs orch orci orco orcs orhs ori- oric orio oris oro- oror oros orri orro orrs orsi orso oscc osci osco oshc oshi osho oshs osii osis osoi osoo osor osos osro ossb ossi osso 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 rib- ribo ribs ricc rich rico rics riho rihs riis rios riri rirs risc rish risi riso riss rob- robb robi robo robs rocc roch roco rocs rohr rohs roio roir rois roob rooi roor roos rorc rori roro rosc rosh rosi roso ross rrhs rrrr rsbi rscc rsch rscs rshs rsis rsos s-ib s-ic s-ii s-os sbbs sbcc sbcs sbhc sbhs sbic sbor sbsi 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 shbs shcc shhh shhs shib shih shii shio shir shis shoo shor shos shri shrs shsc sibc sibi sibo sibs sicc sich sici sico sics sihi sihr sihs sior sios sirc siri siro sirr sirs sisc sish sisi siss sobo