-ic bbb bbc bbi bbn bbo bbr bbs bcb bcc bci bcn bco bcr bcs bi- bib bic bii bin bio bir bis bnb bnc bni bnn bno bnr bns bob boc boi bon boo bor bos brb bri brn bro brr brs bsb bsc bsi bsn bso bsr bss c-- cbb cbc cbi cbn cbo cbr cbs ccb ccc cci ccn cco ccr ccs ci- cib cic cii cin cio cir cis cn- cnb cnc cni cnn cno cnr cns co- cob coc coi con coo cor cos crb crc cri crn cro crr crs csb csc csi csn cso csr css ibb ibc ibi ibn ibo ibr ibs icb icc ici icn ico icr ics iib iic iii iin iio iir iis in- inb inc ini inn ino inr ins io- iob ioc ioi ion ioo ior ios ir- irb irc iri irn iro irr irs is- isb isc isi isn iso isr iss n-i nbb nbc nbi nbn nbo nbr nbs ncb ncc nci ncn nco ncr ncs nib nic nii nin nio nir nis nnb nnc nni nnn nno nns no- nob noc noi non noo nor nos nrb nrc nri nrn nro nrr nrs nsb nsc nsi nsn nso nsr nss o-i ob- obb obc obi obn obo obr obs oc- ocb occ oci ocn oco ocr ocs oib oic oii oin oio oir ois on- onb onc oni onn ono onr ons oo- oob ooc ooi oon ooo oor oos or- orb orc ori orn oro orr ors os- osb osc osi osn oso osr oss rbb rbc rbi rbn rbo rbr rbs rcb rcc rci rcn rco rcr rcs rib ric rii rin rio rir ris rnb rnc rni rnn rno rnr rns rob roc roi ron roo ror ros rrb rrc rri rrn rrr rrs rsb rsc rsi rsn rso rsr rss sbb sbc sbi sbn sbo sbr sbs scb scc sci scn sco scr scs sib sic sii sin sio sir sis snb snc sni snn sno snr sns sob soc soi son soo sor sos sr- srb src sri srn sro srr srs ss- ssb ssc ssi ssn sso ssr sss

bbbb bbbs bbci bbin bbrc bcbc bcbs bccc bcci bccs bcis bcor bcos bcrs bcsc bcsn bcss bibb bibi bibo bibs bicc bici bico bics biin biis bin- binc bini binn bino bins bio- bioc bioi bion bios birb biri birn biro birr birs bis- bisc biso biss bnib bnin bnoc bnor bnrr bnss bobb bobi bobo bobs boco bocs boi- boii boin bois bonc boni bonn bono bons boob booc boon boor boos bor- bori born boro borr bors bosc bosi bosn boso boss brcb bric brin brio bris brno brns brob broc 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 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 cin- cinc cini cino ciob cion cior cios cirb circ ciri ciro cirr cirs cis- cisc cisn cisr ciss cnbc cnci cnco cnib cnic cnrc cnrr cnss cobb cobi cobo cobs coco coin coir cois con- conc coni conn cono cons coob coon coos cor- corb corc cori corn coro corr cors cosc cosi coso coss crbc crcc crcr crib cric crin cris crns crob croc cron croo cror crss cscb cscc csci csco cscr cscs csib csio csir csis 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 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 inbo incb inci inco incr incs inis inni inno innr inns ino- inoi inon inor inos inri inro inrs insc inso inss iobi ioci ioii ioio ioni ionn iono ions iooi iooo ioos iori iors ioso ircc ircs iri- iric irin irio iris irob iroc iron irrc irri irrs isbn iscc isci iscn isco iscr iscs isic isin isis isno iso- isoc ison isor isos isri issc issi isso issr isss n-ii nbbc nbbo nbcc nbci nbco nbcs nbic ncbc ncbi ncbs nccc ncci nccn nccr nccs ncis ncnc ncoc ncor ncos ncrc ncri ncsc ncsi ncss nibi nibo nibs nicc nici nico nics niir nini nino nins nion nioo nios niro nirs nisi niso niss nnnn nnos nnss nobc nobi nobo nobs noci noco nocs noib noin noio noir nois non- noni nonn nono nons noo- noob noon nooo noor noos nor- norb norc nori norn noro norr nors nos- noss nrcs nric nroc nron nrrc nrsc nsbo nscc nscs nsic nsin nsis nsnr nsos nsrc nssb nssc nsso nssr nsss obbo obin obis oboi obon obor obos obri obro obsn obsr obss ocbc occc occi occn ocin ocis ocon ocos ocro ocrr ocrs oici oiii oins oion oios oisc onc- onco onic onir onis onni onno onon onor onos onsc onso oobi oocr oons oooo ooos oosi orbb orbi orbo orbs orci orco orcs ori- oric orin orio oris ornc orni orno orns oro- oron oror oros orri orro orrs orsi orso oscc osci osco osii osin osis osno osnr osoi osoo osor osos osro ossb ossi osso rbbb rbbr rbbs rbis rbss rcbc rcbo rccb rccc rccs rcic rcis rcnr rcon rcos rcsc rcsi rcss rib- ribo ribs ricc rico rics riin riis rinn rino rion rios riri rirs risc risi riso riss rnbr rnco rncs rnin rob- robb robi robo robs rocc roco rocs roin roio roir rois ronc roni rono rons roob rooi roon roor roos rorc rori roro rosc rosi roso ross rrrr rsbi rscc rscn rscs rsis rsnn rsno rsnr rsos s-ib s-ic s-ii s-os sbbs sbcc sbcs sbic sbor sbsi scbi sccc