-ic bbb bbc bbh bbi bbk bbo bbr bbs bcb bcc bch bci bck bco bcr bcs bhb bhc bhh bhi bhk bho bhr bhs bi- bib bic bih bii bik bio bir bis bkb bkc bkk bko bkr bks bob boc boh boi bok boo bor bos brb brh bri brk bro brr brs bsb bsc bsh bsi bsk bso bsr bss c-- cbb cbc cbh cbi cbk cbo cbr cbs ccb ccc cch cci cck cco ccr ccs ch- chb chc chh chi chk cho chr chs ci- cib cic cih cii cik cio cir cis ckb ckc ckh cki cko cks co- cob coc coh coi cok coo cor cos crb crc crh cri crk cro crr crs csb csc csh csi csk cso csr css h-i hbb hbc hbh hbi hbk hbo hbr hbs hcb hcc hch hci hck hco hcr hcs hhb hhc hhh hhi hhk hho hhr hhs hib hic hih hii hik hio hir his hkb hkh hki hkk hko hkr hks hob hoc hoh hoi hok hoo hor hos hr- hrb hrc hrh hri hrk hro hrr hrs hsb hsc hsh hsi hsk hsr hss ibb ibc ibh ibi ibk ibo ibr ibs icb icc ich ici ick ico icr ics ihb ihc ihh ihi ihk iho ihr ihs iib iic iih iii iio iir iis ikb ikc iki ikk iko ikr iks io- iob ioc ioh ioi ioo ior ios ir- irb irc iri irk iro irr irs is- isb isc ish isi isk iso isr iss kbb kbc kbh kbi kbk kbo kbr kbs kcb kcc kch kci kck kcr kcs khh khi khk kho khr khs kib kic kih kii kik kio kir kis kkb kkc kkh kki kkk kkr kks kob koc koh koi kok koo kor kos krc kri krk kro krr krs ksb ksc ksh ksi ksk kso ksr kss o-i ob- obb obc obh obi obk obo obr obs oc- ocb occ och oci ock oco ocr ocs ohc ohh ohi oho ohr ohs oib oic oii oik oio oir ois okb okc oki okk oko okr oks oo- oob ooc ooh ooi ook ooo oor oos or- orb orc orh ori ork oro orr ors os- osb osc osh osi osk oso osr oss rbb rbc rbh rbi rbk rbo rbr rbs rcb rcc rch rci rco rcr rcs rh- rhb rhc rhh rhi rho rhr rhs rib ric rih rii rik rio rir ris rkb rkc rkk rko rks rob roc roh roi rok roo ror ros rrb rrc rrh rri rrk rrr rrs rsb rsc rsh rsi rsk rso rsr rss sbb sbc sbh sbi sbk sbo sbr sbs scb scc sch sci sck sco scr scs sh- shb shc shh shi shk sho shr shs sib sic sih sii sik sio sir sis sk- skb skc skh ski skk sko skr sks sob soc soh soi sok soo sor sos sr- srb src srh sri srk sro srr srs ss- ssb ssc ssh ssi ssk 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 bick bico bics bihi bihs biis bikh biko bio- bioc bioi bios birb biri birk biro birr birs bis- bisc bish bisk biso biss bkhs bobb bobi bobo bobs boch bock boco bocs boho bohr bohs boi- boii bois boki boko boks boob booc booh book boor boos bor- borh bori bork boro borr bors bosc bosh bosi bosk boso boss brcb brhs bric brih brik brio bris brkb brob broc broh brok broo bror bros brrr brrs brsb brsr bsci bscs bshs bsic bsos bssc c-bo cbbc cbbs cbcc cbcr cbcs cbhs cbir cbko cbkr 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 chik chir chis chkb chks choc choh choi chok 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 ciko cikr ciob cior cios cirb circ cirh ciri cirk ciro cirr cirs cis- cisc cish cisk cisr ciss ckbc ckbi ckch ckck ckco ckcs ckhs ckob ckoc ckoi ckoo ckor ckos ckrc cksb cksh ckso cobb cobh cobi cobo cobs coch cock coco coho cohs coir cois cok- coko coob cooh cook coos cor- corb corc cori cork coro corr cors cosc cosh cosi coso coss crbc crcc crcr crhs crib cric crik cris crkc crob croc croh crok croo cror crss cscb cscc csch csci csco cscr cscs cshs csib csik csio csir csis csks 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 hick hico hics hihc hihi hiho hiis hiki hiob hioc hiri hirk hiro hirs hisb hish hiss hkcc hkcs hkir hkis hobo hobs hoch hock hocr hocs hoho hoik hoir hois hoki hoko hoks hook hoor hoos horc hori hork horo horr hors hosh hoss hrhs hrib hrob hros hrrc hrso hsbc hscc hsci hshs hski hsob ibcs ibis ibos ibrc ibri ibro ibss icbc icbs iccb iccc icci icco iccr iccs ichc ichi icho ichr ichs icis icks 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 ikki ikko ikoo ikri iobi ioci ioii ioio ioko iooi iooo ioos iori iors ioso ircc ircs irhs iri- iric irio iris irki irks irob iroc iroh irrc irri irrs iscc isch isci isco iscr iscs ishi ishk ishr ishs isic isis isko iso- isoc isok isor isos isri issc issh issi isso issr isss k-ci k-os kbbb kbbc kbbi kbbk kbbo kbbr kbbs kbcb kbch kbci kbck