b-u bbb bbc bbd bbk bbm bbr bbs bbt bbu bcb bcc bcd bck bcm bcr bcs bct bcu bdb bdc bdd bdk bdm bdr bds bdt bdu bkb bkc bkk bkm bkr bks bkt bmb bmc bmd bmk bmm bmr bms bmt bmu brb brd brk brm brr brs brt bru bsb bsc bsd bsk bsm bsr bss bst bsu btb btc btd btk btm btr bts btt btu bub buc bud buk bum bur bus but buu c-- cbb cbc cbd cbk cbm cbr cbs cbt cbu ccb ccc ccd cck ccm ccr ccs cct ccu cdb cdc cdd cdk cdm cdr cds cdt cdu ckb ckc ckd ckm cks ckt cmb cmc cmd cmk cmm cmr cms cmt cmu crb crc crd crk crm crr crs crt cru csb csc csd csk csm csr css cst csu ctb ctc ctd ctk ctm ctr cts ctt ctu cub cuc cud cuk cum cur cus cut cuu dbb dbc dbd dbk dbm dbr dbs dbt dbu dcb dcc dcd dck dcm dcr dcs dct dcu ddb ddc ddd ddk ddm ddr dds ddt ddu dkb dkc dkk dkm dkr dks dkt dku dmb dmc dmd dmk dmm dmr dms dmt dmu drb drc drd drk drm drr drs drt dru dsb dsc dsd dsk dsm dsr dss dst dsu dtb dtc dtd dtk dtm dtr dts dtt dtu dub duc dud duk dum dur dus dut k-t kbb kbc kbd kbk kbm kbr kbs kbu kcb kcc kcd kck kcm kcr kcs kct kcu kdb kdc kdk kdm kdr kds kdt kdu kkb kkc kkk kkm kkr kks kkt kku kmb kmc kmd kmk kmm kms kmt kmu krc krd krk krr krs krt kru ksb ksc ksd ksk ksm ksr kss kst ksu ktb ktc ktk ktm ktr kts ktt ktu kub kuc kud kuk kum kur kus kut kuu m-r mbb mbc mbd mbk mbm mbr mbs mbt mbu mc- mcb mcc mcd mck mcm mcr mcs mct mcu mdb mdc mdd mdk mdm mdr mds mdt mdu mkb mkc mkd mkk mkm mkr mks mkt mku mmb mmc mmd mmk mmm mmr mms mmt mmu mrb mrc mrd mrk mrm mrr mrs mrt mru msb msc msd msk msm msr mss mst msu mtb mtc mtd mtk mtm mtr mts mtt mtu mub muc mud muk mum mur mus mut muu rbb rbc rbd rbk rbm rbr rbs rbt rbu rcb rcc rcd rcm rcr rcs rct rcu rdb rdc rdd rdm rdr rds rdt rdu rkb rkc rkk rkm rks rkt rku rmb rmc rmd rmm rmr rms rmt rrb rrc rrd rrk rrm rrr rrs rrt rru rsb rsc rsd rsk rsm rsr rss rst rsu rtb rtc rtd rtk rtm rtr rts rtt rtu rub ruc rud ruk rum rur rus rut ruu sbb sbc sbd sbk sbm sbr sbs sbt sbu scb scc scd sck scm scr scs sct scu sdb sdc sdd sdk sdm sdr sds sdt sdu sk- skb skc skd skk skm skr sks skt sku smb smc smd smk smm smr sms smt smu sr- srb src srd srk srm srr srs srt ss- ssb ssc ssd ssk ssm ssr sss sst ssu stb stc std stk stm str sts stt stu sub suc sud suk sum sur sus sut suu tbb tbc tbd tbk tbm tbr tbs tbt tbu tcb tcc tcd tck tcm tcr tcs tct tcu tdb tdc tdd tdk tdm tdr tds tdt tdu tkb tkc tkk tkm tkr tks tkt tmb tmc tmd tmk tmm tmr tms tmt tmu trb trc trd trk trm trr trs trt tru tsb tsc tsd tsk tsm tsr tss tst tsu ttb ttc ttd ttk ttm ttr tts ttt ttu tub tuc tud tuk tum tur tus tut tuu ubb ubc ubk ubr ubs ubt ubu ucb ucc ucd uck ucm ucr ucs uct ucu udb udc udd udk udm udr uds udt udu ukb ukc ukk ukr uku um- umb umc umd umm umr ums umt umu ur- urb urc urd urk urm urr urs urt uru usb usc usd usk usm usr uss ust usu utb utc utd utk utm utr uts utt utu uuc uum uur uus uut uuu

bbbb bbbs bbcm bbdd bbrc bcbc bcbs bccc bccm bccs bcds bcms bcrs bcru bcsc bcsm bcss bctc bcts bcuc bd-r bdbc bddc bdrm bdsd bdsm bmdb bmtc bmts bmus brcb brdm brds brdt brkb brmc brrm brrr brrs brsb brsr brst brtc bruc brud brum brus brut bsbd bscs bskt bsms bsmt bsrd bsrm bssc bssd bssm bsts btcc btcs btdt btrc btrt btss bttb btus bubb bubs bubu bucc buck bucs bucu budb budd buds budu bukk buku bum- bumb bums bur- burb burd burk burm burr burs burt buru busc busk buss bust busu but- buts butt buus c-cd cbbc cbbs cbcc cbcm cbcr cbcs cbct cbcu cbdb cbdc cbds cbkm cbkr cbms cbrd cbrm cbrt cbsc cbsm cbtc cbus ccbc cccb cccc cccm cccs cccu ccdc ccdm ccdr ccds cckm ccmb ccmc ccmd ccmm ccms ccrc ccrs ccrt ccsd ccss ccst cctb cctc cctt ccuc ccus ccut cd-r cdcs cddb cddr cdms cdrs cdss ckbc ckck ckcm ckcs ckdm ckdu ckrc ckrd ckrm cksb ckst cktb ckts cmbc cmbs cmcc cmcs cmdb cmdr cmmb cmmc cmms cmrr cmrs cmsc cmst cmtc cmtu cmus crbc crbu crcc crcr crdc crkc crmb crms crrt crss crst crtc crtm crts crub crud cruk crum crus crut csbm cscb cscc cscd cscr cscs csdb csdr csks csmc csmu csrc csrd csrs cssd cssm cssr cstc cstd cstm cstr csts csum csur csus ctbs ctrc ctrm ctrs ctsc ctss ctsu ctts cub- cubb cubs cucc cuck cucm cuds cuk- cum- cums cumt curb curd curr curs curt cusb cusd cusk cuss cust cusu cut- cutc cuts cutt dbcc dbcs dbms dbrs dbss dbtt dbus dcbc dccb dccc dccs dcct dccu dcdb dcds dcms dcmu dcrk dcsc dcss dctc dctm dcts dddd ddrc ddss ddts ddub dkdc