-ic b-u bbb bbc bbf bbg bbi bbo bbr bbs bbu bcb bcc bcf bcg bci bco bcr bcs bcu bfb bfc bff bfg bfi bfo bfr bfs bfu bgb bgc bgf bgg bgi bgo bgr bgs bgu bi- bib bic bif big bii bio bir bis biu bob boc bof bog boi boo bor bos bou brb brf brg bri bro brr brs bru bsb bsc bsf bsg bsi bso bsr bss bsu bub buc buf bug bui buo bur bus buu c-- cbb cbc cbf cbg cbi cbo cbr cbs cbu ccb ccc ccf ccg cci cco ccr ccs ccu cfb cfc cff cfg cfi cfo cfr cfs cfu cgb cgc cgg cgi cgo cgr cgs cgu ci- cib cic cif cig cii cio cir cis ciu co- cob coc cof cog coi coo cor cos cou crb crc crf crg cri cro crr crs cru csb csc csf csg csi cso csr css csu cub cuc cuf cug cui cuo cur cus cuu fbb fbc fbf fbg fbi fbo fbr fbs fbu fcb fcc fcf fcg fci fco fcr fcs fcu ffc fff ffg ffi ffo ffr ffs ffu fgb fgc fgf fgg fgi fgr fgs fib fic fif fig fii fir fis fiu fob foc fof fog foi foo for fos fou frb frc frf frg fri fro frr frs fru fsb fsc fsf fsg fsi fso fsr fss fsu fub fuf fug fui fuo fur fus fuu gbc gbf gbg gbi gbo gbr gbs gbu gcb gcc gcf gcg gci gco gcr gcs gcu gfb gfc gff gfi gfo gfr gfs ggb ggc ggg ggi ggo ggr ggs ggu gib gic gif gig gii gio gir gis giu gob goc gof gog goi goo gor gos gou grb grc grf grg gri gro grr grs gru gsb gsc gsf gsg gsi gso gsr gss gsu gu- gub guc guf gug gui guo gur gus guu i-f ibb ibc ibf ibg ibi ibo ibr ibs ibu icb icc icf icg ici ico icr ics icu ifb ifc iff ifg ifi ifo ifr ifs ifu igb igc igf igg igi igo igr igs igu iib iic iif iii iio iir iis iiu io- iob ioc iof iog ioi ioo ior ios iou ir- irb irc irf irg iri iro irr irs iru is- isb isc isf isg isi iso isr iss isu iu- iub iuc iug iui iur ius o-i ob- obb obc obf obg obi obo obr obs obu oc- ocb occ ocf ocg oci oco ocr ocs ocu of- ofb ofc off ofg ofi ofo ofr ofs ofu ogc ogf ogg ogi ogo ogs oib oic oif oii oio oir ois oiu oo- oob ooc oof oog ooi ooo oor oos or- orb orc orf org ori oro orr ors oru os- osb osc osf osg osi oso osr oss osu ou- ouc ouf oui ouo our ous rbb rbc rbf rbg rbi rbo rbr rbs rbu rcb rcc rcf rcg rci rco rcr rcs rcu rfb rfc rff rfg rfi rfo rfr rfs rfu rgb rgc rgf rgg rgi rgo rgr rgs rib ric rif rig rii rio rir ris rob roc rof rog roi roo ror ros rou rrb rrc rrf rrg rri rrr rrs rru rsb rsc rsf rsg rsi rso rsr rss rsu rub ruc ruf rug rui ruo rur rus ruu sbb sbc sbf sbg sbi sbo sbr sbs sbu scb scc scf scg sci sco scr scs scu sfb sfc sff sfg sfi sfo sfr sfs sfu sgb sgc sgf sgg sgi sgo sgr sgs sgu sib sic sif sig sii sio sir sis siu sob soc sof sog soi soo sor sos sou sr- srb src srf srg sri sro srr srs ss- ssb ssc ssf ssg ssi sso ssr sss ssu sub suc suf sug sui suo sur sus suu ubb ubc ubf ubg ubi ubo ubr ubs ubu ucb ucc ucf ucg uci uco ucr ucs ucu ufc uff ufg ufi ufo ufr ufs ufu ugb ugc ugf ugg ugi ugo ugr ugs ugu uib uic uif uig uii uio uir uis uiu uob uoc uog uoo uor uos ur- urb urc urf urg uri uro urr urs uru usb usc usf usg usi uso usr uss usu uuc uug uur uus uuu

-ous bbbb bbbs bbci bbfc bbrc bbrg bcbc bcbg bcbs bccc bcci bccs bcfc bcgs bcis bcof bcor bcos bcrs bcru bcsc bcss bcuc bfcs bffs bfgf bfsi bfsr bgfc bggs bibb bibi bibo bibs bicc bicg bici bico bics biff bifi bigb bigc bigg bigo bigs bigu biis bio- bioc biog bioi bios biou birb birg biri biro birr birs biru bis- bisc biso biss bisu bobb bobi bobo bobs bobu boco bocs bocu boff bofs bofu bogg bogi bogo bogs boi- boii bois boiu boob booc boof boog boor boos bor- borf borg bori boro borr bors boru bosc bosi boso boss bosu bouf bour bous brcb brfc brfu bric brig brio bris brob broc brog broo bror bros brou brrr brrs brsb brsr bruc brug brus bsci bscs bsfc bsff bsfs bsgs bsic bsos bssc bubb bubi bubo bubs bubu bucc buci buco bucs bucu bufc buff bufo bufr bugg bugi bugo bugs buic buif buir buis buiu bur- burb burg buri buro burr burs buru busc busi buss busu buus c-bo cbbc cbbs cbcc cbcr cbcs cbcu cbfb cbfc cbgb cbir cbsc cbsi cbus ccbc cccb cccc cccf ccci cccs cccu ccfc ccff ccfi ccgc ccgs ccic ccii ccir ccis ccob ccoc ccrc ccrf ccrg ccri ccrs ccsf ccsg ccsi ccss ccuc ccus cfbc cfbr cfbs cfcb cfcf cfco cfcs cffb cffr cfgo cfgs cfor cfos cfrb cfrg cfsg cfsi cgcc cgcg cgfc cggs cgis cgro cgsb cgss cibc cibi cibo cicc cici cico cicr cics cicu ciff cifg cifs cigi cigs cigu ciii ciis ciob cior cios cirb circ ciri ciro cirr cirs cis- cisc cisr ciss ciuc cius cobb cobi cobo cobs cobu coco cocu cofc coff