-ic b-u bbb bbc bbd bbi bbk bbm bbr bbu bcb bcc bcd bci bck bcm bcr bcu bdb bdc bdd bdi bdk bdm bdr bdu bi- bib bic bid bii bik bim bir biu bkb bkc bkk bkm bkr bmb bmc bmd bmi bmk bmm bmr bmu brb brd bri brk brm brr bru bub buc bud bui buk bum bur buu c-- cbb cbc cbd cbi cbk cbm cbr cbu ccb ccc ccd cci cck ccm ccr ccu cdb cdc cdd cdi cdk cdm cdr cdu ci- cib cic cid cii cik cim cir ciu ckb ckc ckd cki ckm cmb cmc cmd cmi cmk cmm cmr cmu crb crc crd cri crk crm crr cru cub cuc cud cui cuk cum cur cuu dbb dbc dbd dbi dbk dbm dbr dbu dcb dcc dcd dci dck dcm dcr dcu ddb ddc ddd ddi ddk ddm ddr ddu di- dib dic did dii dik dim dir diu dkb dkc dki dkk dkm dkr dku dmb dmc dmd dmi dmk dmm dmr dmu drb drc drd dri drk drm drr dru dub duc dud dui duk dum dur i-d ibb ibc ibd ibi ibk ibm ibr ibu icb icc icd ici ick icm icr icu idb idc idd idi idk idm idr idu iib iic iid iii iim iir iiu ikb ikc iki ikk ikr iku im- imb imc imd imi imm imu ir- irb irc ird iri irk irm irr iru iu- iub iuc iud iui ium iur kbb kbc kbd kbi kbk kbm kbr kbu kcb kcc kcd kci kck kcm kcr kcu kdb kdc kdk kdm kdr kdu kib kic kid kii kik kim kir kiu kkb kkc kki kkk kkm kkr kku kmb kmc kmd kmi kmk kmm kmu krc krd kri krk krr kru kub kuc kud kui kuk kum kur kuu m-r mbb mbc mbd mbi mbk mbm mbr mbu mc- mcb mcc mcd mci mck mcm mcr mcu mdb mdc mdd mdi mdk mdm mdr mdu mi- mib mic mid mii mik mim mir miu mkb mkc mkd mkk mkm mkr mku mmb mmc mmd mmi mmk mmm mmr mmu mrb mrc mrd mri mrk mrm mrr mru mub muc mud mui muk mum mur muu rbb rbc rbd rbi rbk rbm rbr rbu rcb rcc rcd rci rcm rcr rcu rdb rdc rdd rdi rdm rdr rdu rib ric rid rii rik rim rir rkb rkc rkk rkm rku rmb rmc rmd rmi rmm rmr rrb rrc rrd rri rrk rrm rrr rru rub ruc rud rui ruk rum rur ruu ubb ubc ubi ubk ubr ubu ucb ucc ucd uci uck ucm ucr ucu udb udc udd udi udk udm udr udu uib uic uid uii uim uir uiu ukb ukc uki ukk ukr uku um- umb umc umd umi umm umr umu ur- urb urc urd uri urk urm urr uru uuc uum uur uuu

bbbb bbci bbcm bbdd bbrc bcbc bccc bcci bccm bcru bcuc bd-r bdbc bddc bdii bdmi bdrm bibb bibi bicc bici bick bidi bidr bidu biku birb bird biri birk birr biru bmci bmdb bmic bmir bmmi brcb brdm bric brid brik brim brkb brmc brrm brrr bruc brud brum bubb bubi bubu bucc buci buck bucu budb budd budi budu buic buid buik buir buiu buki bukk buku bum- bumb bur- burb burd buri burk burm burr buru c-cd cbbc cbcc cbcm cbcr cbcu cbdb cbdc cbdi cbid cbir cbkm cbkr cbrd cbrm ccbc cccb cccc ccci cccm cccu ccdc ccdi ccdm ccdr ccic ccid ccii ccim ccir cckm ccmb ccmc ccmd ccmm ccrc ccri ccuc cd-r cddb cddr cdic cdii cibc cibi cicc cici cicr cicu cidc cidi cidr ciid ciii cikr cimb cimd cimi cimm cimr cirb circ ciri cirk cirm cirr ciuc ckbc ckbi ckck ckcm ckdm ckdu ckrc ckrd ckrm cmbc cmcc cmdb cmdr cmii cmir cmmb cmmc cmmi cmri cmrr crbc crbu crcc crcr crdc crib cric crik crim criu crkc crmb crub crud cruk crum cub- cubb cubi cucc cuci cuck cucm cudi cui- cuir cuk- cum- curb curd curi curr dbcc dcbc dccb dccc dcci dccu dcdb dcii dcim dcmi dcmu dcrk dddd ddrc ddub dibb dici dick didi didu diii diki diku dimi dimm dimu dird dirk dirr dkdc dkid dkim dmcc dmcm dmdc dmrb dmrc drbc drib dric drmk drub drui druk drum druu dub- dubb dubc dubu duck dudd dudu duid duir duki duku dumb dumi dumm duri durk duru duur ibbm ibid ibim ibrc ibrd ibri icbc icbd icbm iccb iccc icci iccr iccu icdc icdd icmc icmi icmm icrc icrm icrr icru icub idbm idcr iddm idic idid idir idku idrc idub iicd iiii iimc iirc iiuc iium ikid ikki ikri imbi imcb imci imck imdb imdi imid imir immi imrc imri imrr irbm ircc ircd ircu irdc iri- iric irid irki irmc irrc irri iucc iuiu k-ci k-id kbbb kbbc kbbd kbbi kbbk kbbm kbbr kbbu kbcb kbci kbck kbcr kbcu kbdb kbdi kbdr kbib kbic kbid kbik kbim kbiu kbkb kbkk kbkr kbmb kbmc kbmi kbmr kbrb kbrc kbrd kbri kbrk kbru kbub kbuc kbud kbuk kbur kbuu kcbc kcbd kcbi kcbk kcbr kcbu kccb kccc kccd kcci kcck kccr kccu kcdc kcdd kcdi kcdr kcdu kcic kcid kcii kcim kcir kciu kckc kckk kckm kckr kcmb kcmc kcmd kcmi kcmk kcmm kcmr kcrc kcri kcrr kcru kcub kcui kcuk kdbb kdbi kdbm kdbr kdcc kdcd kdcr kddb kddc kddd kddi kddk kddr kdic kdim kdkb kdkd kdkk kdkr kdmc kdmd kdmi kdmr kdrb kdri kdrm kdub kduc kdur kibb kibc kibi kibr kibu kicb kicc kicd kick kicm kicr kidb kidd kidi kidk kidr kidu kiic kiid kiii kiik kiiu kikc kikd kiki kikk kikr kiku kimb kimi kimm kirb kirc kiri kirk kirr kiru kiur kiuu kkbb kkbd kkbi kkbr kkcb kkcd kkci kkck kkcm kkcr kkdc kkdd kkdm kkic kkid kkik kkim kkkk kkmc kkmi kkmk kkmr kkrb kkrc kkrk kkrr kkuu kmbc kmbd kmbi kmbr