-ic bbb bbc bbi bbk bbn bbo bbr bbs bcb bcc bci bck bcn bco bcr bcs bi- bib bic bii bik bin bio bir bis bkb bkc bkk bkn bko bkr bks bnb bnc bni bnk bnn bno bnr bns bob boc boi bok bon boo bor bos brb bri brk brn bro brr brs bsb bsc bsi bsk bsn bso bsr bss c-- cbb cbc cbi cbk cbn cbo cbr cbs ccb ccc cci cck ccn cco ccr ccs ci- cib cic cii cik cin cio cir cis ckb ckc cki cko cks cn- cnb cnc cni cnn cno cnr cns co- cob coc coi cok con coo cor cos crb crc cri crk crn cro crr crs csb csc csi csk csn cso csr css ibb ibc ibi ibk ibn ibo ibr ibs icb icc ici ick icn ico icr ics iib iic iii iin iio iir iis ikb ikc iki ikk iko ikr iks in- inb inc ini ink inn ino inr ins io- iob ioc ioi ion ioo ior ios ir- irb irc iri irk irn iro irr irs is- isb isc isi isk isn iso isr iss kbb kbc kbi kbk kbn kbo kbr kbs kcb kcc kci kck kcn kcr kcs kib kic kii kik kin kio kir kis kkb kkc kki kkk kkn kkr kks kn- knc kni knk knn kno knr kob koc koi kok kon koo kor kos krc kri krk krn kro krr krs ksb ksc ksi ksk ksn kso ksr kss n-i nbb nbc nbi nbk nbn nbo nbr nbs ncb ncc nci nck ncn nco ncr ncs nib nic nii nik nin nio nir nis nkc nki nkk nkn nko nkr nks nnb nnc nni nnk nnn nno nns no- nob noc noi nok non noo nor nos nrb nrc nri nrk nrn nro nrr nrs nsb nsc nsi nsk nsn nso nsr nss o-i ob- obb obc obi obk obn obo obr obs oc- ocb occ oci ock ocn oco ocr ocs oib oic oii oik oin oio oir ois okb okc oki okk oko okr oks on- onb onc oni onk onn ono onr ons oo- oob ooc ooi ook oon ooo oor oos or- orb orc ori ork orn oro orr ors os- osb osc osi osk osn oso osr oss rbb rbc rbi rbk rbn rbo rbr rbs rcb rcc rci rcn rco rcr rcs rib ric rii rik rin rio rir ris rkb rkc rkk rko rks rnb rnc rni rnn rno rnr rns rob roc roi rok ron roo ror ros rrb rrc rri rrk rrn rrr rrs rsb rsc rsi rsk rsn rso rsr rss sbb sbc sbi sbk sbn sbo sbr sbs scb scc sci sck scn sco scr scs sib sic sii sik sin sio sir sis sk- skb skc ski skk sko skr sks snb snc sni snk snn sno snr sns sob soc soi sok son soo sor sos sr- srb src sri srk srn sro srr srs ss- ssb ssc ssi ssk ssn sso ssr sss

-nik bbbb bbbs bbci bbin bbrc bcbc bcbs bccc bcci bccs bcis bcor bcos bcrs bcsc bcsn bcss bibb bibi bibo bibs bicc bici bick bico bics biin biis biko bin- binc bini bink binn bino bins bio- bioc bioi bion bios birb biri birk birn biro birr birs bis- bisc bisk biso biss bnib bnin bnoc bnor bnrr bnss bobb bobi bobo bobs bock boco bocs boi- boii boin bois boki bokn boko boks bonc boni bonk bonn bono bons boob booc book boon boor boos bor- bori bork born boro borr bors bosc bosi bosk bosn boso boss brcb bric brik brin brio bris brkb brno brns brob broc brok bron broo bror bros brrr brrs brsb brsr bsci bscs bsic bsin bsns bson bsos bssc c-bo cbbc cbbs cbcc cbcn cbcr cbcs cbir cbkn cbko cbkr cbrn cbsc cbsi cbsn ccbc ccbn cccb cccc ccci cccs ccic ccii ccir ccis ccnb ccnc ccni ccnr ccns ccob ccoc ccrc ccri ccrs ccsi ccsn ccss cibc cibi cibo cicc cici cico cicr cics ciii ciis ciko cikr cin- cinc cini cink cino ciob cion cior cios cirb circ ciri cirk ciro cirr cirs cis- cisc cisk cisn cisr ciss ckbc ckbi ckck ckco ckcs ckin cknb cknc ckns ckob ckoc ckoi ckoo ckor ckos ckrc cksb ckso cnbc cnci cnco cnib cnic cnki cnrc cnrr cnss cobb cobi cobo cobs cock coco coin coir cois cok- coko con- conc coni conk conn cono cons coob cook coon coos cor- corb corc cori cork corn coro corr cors cosc cosi coso coss crbc crcc crcr crib cric crik crin cris crkc crns crob croc crok cron croo cror crss cscb cscc csci csco cscr cscs csib csik csio csir csis csks csob csor csos csrc csrs cssr i-no ibcs ibis ibns ibon ibos ibrc ibri ibro ibsn ibss icbc icbs iccb iccc icci iccn icco iccr iccs icis icks icnb icnc icns icoc icon icor icos icrc icrr icrs icsb icsc icsi icsr icss iiii iiio iiis iino iioi iioo iios iirc iirs iisc iisi iisr ikin ikki ikko ikon ikoo ikri inbo incb inci inco incr incs inis inki inks inni inno innr inns ino- inoi inon inor inos inri inro inrs insc inso inss iobi ioci ioii ioio ioko ioni ionn iono ions iooi iooo ioos iori iors ioso ircc ircs iri- iric irin irio iris irki irks irob iroc iron irrc irri irrs isbn iscc isci iscn isco iscr iscs isic isin isis isko isno iso- isoc isok ison isor isos isri issc issi isso issr isss k-ci k-os kbbb kbbc kbbi kbbk kbbo kbbr kbbs kbcb kbci kbck kbco kbcr kbcs kbib kbic kbik kbio kbis kbkb kbkk kbko kbkr kbnn kbno kbnr kbob kboc kboi kbok kbon kboo kbos kbrb kbrc kbri kbrk kbrn kbro kbsb kbsi kbsk kbsn kbso kbsr kbss kcbc kcbi kcbk kcbr kcbs kccb kccc kcci kcck kccr kcic kcii