b-u bbb bbc bbd bbf bbh bbo bbr bbs bbu bcb bcc bcd bcf bch bco bcr bcs bcu bdb bdc bdd bdf bdh bdo bdr bds bdu bfb bfc bfd bff bfh bfo bfr bfs bfu bhb bhc bhd bhf bhh bho bhr bhs bhu bob boc bod bof boh boo bor bos bou brb brd brf brh bro brr brs bru bsb bsc bsd bsf bsh bso bsr bss bsu bub buc bud buf buh buo bur bus buu c-- cbb cbc cbd cbf cbh cbo cbr cbs cbu ccb ccc ccd ccf cch cco ccr ccs ccu cdb cdc cdd cdf cdh cdo cdr cds cdu cfb cfc cfd cff cfh cfo cfr cfs cfu ch- chb chc chd chf chh cho chr chs chu co- cob coc cod cof coh coo cor cos cou crb crc crd crf crh cro crr crs cru csb csc csd csf csh cso csr css csu cub cuc cud cuf cuh cuo cur cus cuu dbb dbc dbd dbf dbh dbo dbr dbs dbu dcb dcc dcd dcf dco dcr dcs dcu ddb ddc ddd ddf ddh ddo ddr dds ddu dfb dfc dfd dff dfh dfo dfr dfs dfu dh- dhb dhc dhd dhf dhh dho dhr dhs dhu dob doc dod dof doh doo dor dos dou drb drc drd dro drr drs dru dsb dsc dsd dsf dsh dso dsr dss dsu dub duc dud duf duh duo dur dus fbb fbc fbd fbf fbh fbo fbr fbs fbu fcb fcc fcd fcf fco fcr fcs fcu fdb fdc fdd fdf fdh fdo fdr fds fdu ffc ffd fff ffh ffo ffr ffs ffu fhb fhc fhf fhh fho fhr fhs fob foc fof foh foo for fos fou frb frc frd frf frh fro frr frs fru fsb fsc fsd fsf fsh fso fsr fss fsu fub fud fuf fuo fur fus fuu hbb hbc hbd hbf hbh hbo hbr hbs hbu hcb hcc hcd hcf hch hco hcr hcs hdb hdc hdd hdf hdh hdo hdr hds hdu hfb hfc hfd hff hfh hfo hfr hfs hfu hhb hhc hhd hhf hhh hho hhr hhs hhu hob hoc hod hof hoh hoo hor hos hou hr- hrb hrc hrd hrf hrh hro hrr hrs hru hsb hsc hsd hsf hsh hsr hss hsu hub huc hud huf huh huo hur hus huu ob- obb obc obd obf obh obo obr obs obu oc- ocb occ ocd ocf och oco ocr ocs ocu odb odc odd odf odh odo odr ods odu of- ofb ofc ofd off ofo ofr ofs ofu ohc ohd ohf ohh oho ohr ohs ohu oo- oob ooc ood oof ooh ooo oor oos or- orb orc ord orf orh oro orr ors oru os- osb osc osd osf osh oso osr oss osu ou- ouc oud ouf ouh ouo our ous rbb rbc rbd rbf rbh rbo rbr rbs rbu rcb rcc rcd rcf rch rco rcr rcs rcu rdb rdc rdd rdf rdh rdo rdr rds rdu rfb rfc rfd rff rfh rfo rfr rfs rfu rh- rhb rhc rhd rhf rhh rho rhr rhs rhu rob roc rod rof roh roo ror ros rou rrb rrc rrd rrf rrh rrr rrs rru rsb rsc rsd rsf rsh rso rsr rss rsu rub ruc rud ruf ruh ruo rur rus ruu sbb sbc sbd sbf sbh sbo sbr sbs sbu scb scc scd scf sch sco scr scs scu sdb sdc sdd sdf sdh sdo sdr sds sdu sfb sfc sfd sff sfh sfo sfr sfs sfu sh- shb shc shd shf shh sho shr shs shu sob soc sod sof soh soo sor sos sou sr- srb src srd srf srh sro srr srs ss- ssb ssc ssd ssf ssh sso ssr sss ssu sub suc sud suf suh suo sur sus suu ubb ubc ubf ubh ubo ubr ubs ubu ucb ucc ucd ucf uch uco ucr ucs ucu udb udc udd udf udo udr uds udu ufc ufd uff ufh ufo ufr ufs ufu uhb uhc uhd uhf uhh uho uhr uhs uhu uob uoc uod uoo uor uos ur- urb urc urd urf uro urr urs uru usb usc usd usf ush uso usr uss usu uuc uur uus uuu

-hou -ous bbbb bbbs bbch bbdd bbdo bbfc bbhs bbrc bcbc bcbs bccc bccs bcds bcfc bchd bchs bcof bcor bcos bcrs bcru bcsc bcss bcuc bd-r bdbc bddc bddh bdhs bdos bdsd bduf bfcs bffs bfhs bfsr bhcc bhff bhhs bhor bhsf bhur bhuu bobb bobo bobs bobu boch boco bocs bocu bodb bodh bodo bods bodu bofd boff bofh bofs bofu bohd boho bohr bohs bohu boob booc bood boof booh boor boos bor- bord borf borh boro borr bors boru bosc bosh boso boss bosu boud bouf bouh bour bous brcb brdo brds brfc brfu brhs brob broc brod broh broo bror bros brou brrr brrs brsb brsr bruc brud bruh brus bsbd bscs bsfc bsff bsfs bshs bsod bsos bsrd bssc bssd bubb bubo bubs bubu bucc buch buco bucs bucu budb budd budo buds budu bufc buff bufo bufr buho buhr buhs bur- burb burd burh buro burr burs buru busc bush buss busu buus c-bo c-cd cbbc cbbs cbcc cbcr cbcs cbcu cbdb cbdc cbdo cbds cbfb cbfc cbhs cbrd cbrh cbsc cbus ccbc cccb cccc cccf cccs cccu ccdc ccdf ccdh ccdr ccds ccfc ccfd ccff cchr cchs ccob ccoc ccod ccrc ccrf ccrs ccsd ccsf ccss ccuc ccus cd-r cdbf cdcs cddb cddr cdfs cdhs cdos cdrs cdss cfbc cfbr cfbs cfcb cfcf cfco cfcs cfds cffb cffr cfhs cfor cfos cfrb chch chcs chfc chfr chfs chhs choc chod choh choo chor chos chou chrb chrc chrd chrf chro chrr chrs chsc chsh chsr chub chud chur chus cobb cobh cobo cobs cobu coch coco cocu codd cods cofc coff cofs coho cohs coob cood coof cooh coos cor- corb corc cord corf coro corr cors cosc