-ic b-u bbb bbc bbd bbi bbk bbr bbu bcb bcc bcd bci bck bcr bcu bdb bdc bdd bdi bdk bdr bdu bi- bib bic bid bii bik bir biu bkb bkc bkk bkr brb brd bri brk brr bru bub buc bud bui buk bur buu c-- cbb cbc cbd cbi cbk cbr cbu ccb ccc ccd cci cck ccr ccu cdb cdc cdd cdi cdk cdr cdu ci- cib cic cid cii cik cir ciu ckb ckc ckd cki crb crc crd cri crk crr cru cub cuc cud cui cuk cur cuu dbb dbc dbd dbi dbk dbr dbu dcb dcc dcd dci dck dcr dcu ddb ddc ddd ddi ddk ddr ddu di- dib dic did dii dik dir diu dkb dkc dki dkk dkr dku drb drc drd dri drk drr dru dub duc dud dui duk dur i-d ibb ibc ibd ibi ibk ibr ibu icb icc icd ici ick icr icu idb idc idd idi idk idr idu iib iic iid iii iir iiu ikb ikc iki ikk ikr iku ir- irb irc ird iri irk irr iru iu- iub iuc iud iui iur kbb kbc kbd kbi kbk kbr kbu kcb kcc kcd kci kck kcr kcu kdb kdc kdk kdr kdu kib kic kid kii kik kir kiu kkb kkc kki kkk kkr kku krc krd kri krk krr kru kub kuc kud kui kuk kur kuu rbb rbc rbd rbi rbk rbr rbu rcb rcc rcd rci rcr rcu rdb rdc rdd rdi rdr rdu rib ric rid rii rik rir rkb rkc rkk rku rrb rrc rrd rri rrk rrr rru rub ruc rud rui ruk rur ruu ubb ubc ubi ubk ubr ubu ucb ucc ucd uci uck ucr ucu udb udc udd udi udk udr udu uib uic uid uii uir uiu ukb ukc uki ukk ukr uku ur- urb urc urd uri urk urr uru uuc uur uuu

bbbb bbci bbdd bbrc bcbc bccc bcci bcru bcuc bd-r bdbc bddc bdii bibb bibi bicc bici bick bidi bidr bidu biku birb bird biri birk birr biru brcb bric brid brik brkb brrr bruc brud bubb bubi bubu bucc buci buck bucu budb budd budi budu buic buid buik buir buiu buki bukk buku bur- burb burd buri burk burr buru c-cd cbbc cbcc cbcr cbcu cbdb cbdc cbdi cbid cbir cbkr cbrd ccbc cccb cccc ccci cccu ccdc ccdi ccdr ccic ccid ccii ccir ccrc ccri ccuc cd-r cddb cddr cdic cdii cibc cibi cicc cici cicr cicu cidc cidi cidr ciid ciii cikr cirb circ ciri cirk cirr ciuc ckbc ckbi ckck ckdu ckrc ckrd crbc crbu crcc crcr crdc crib cric crik criu crkc crub crud cruk cub- cubb cubi cucc cuci cuck cudi cui- cuir cuk- curb curd curi curr dbcc dcbc dccb dccc dcci dccu dcdb dcii dcrk dddd ddrc ddub dibb dici dick didi didu diii diki diku dird dirk dirr dkdc dkid drbc drib dric drub drui druk druu dub- dubb dubc dubu duck dudd dudu duid duir duki duku duri durk duru duur ibid ibrc ibrd ibri icbc icbd iccb iccc icci iccr iccu icdc icdd icrc icrr icru icub idcr idic idid idir idku idrc idub iicd iiii iirc iiuc ikid ikki ikri ircc ircd ircu irdc iri- iric irid irki irrc irri iucc iuiu k-ci k-id kbbb kbbc kbbd kbbi kbbk kbbr kbbu kbcb kbci kbck kbcr kbcu kbdb kbdi kbdr kbib kbic kbid kbik kbiu kbkb kbkk kbkr 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 kcir kciu kckc kckk kckr kcrc kcri kcrr kcru kcub kcui kcuk kdbb kdbi kdbr kdcc kdcd kdcr kddb kddc kddd kddi kddk kddr kdic kdkb kdkd kdkk kdkr kdrb kdri kdub kduc kdur kibb kibc kibi kibr kibu kicb kicc kicd kick kicr kidb kidd kidi kidk kidr kidu kiic kiid kiii kiik kiiu kikc kikd kiki kikk kikr kiku kirb kirc kiri kirk kirr kiru kiur kiuu kkbb kkbd kkbi kkbr kkcb kkcd kkci kkck kkcr kkdc kkdd kkic kkid kkik kkkk kkrb kkrc kkrk kkrr kkuu krbb krbd krbi krbk krbr krcb krcc krcd krci krcu krdc krdd krdr krdu krib krid krik krkc krkd krki krkk krkr krku krrb krrc krri krrk krrr kruc krui kruk krur kubb kubc kubd kubr kubu kucb kucc kucd kuci kucr kudd kudi kudu kuic kuik kuki kukk kuku kurb kurd kuri kurk kurr kuru kuub kuuk kuur kuuu rbbb rbbr rcbc rccb rccc rcdc rcic rcid rcrd rib- ribu ricc rick ridc ridd ridi riki rikk riku riri rrrr rubb rubi rubu ruci ruck rudd rudi ruid ruki rukk ruku rurc rurd ruri ruru ruud ubbi ubic ubid ubii ubik ubir ubud ucbc ucci ucdc ucdd ucrc udbc uddi udic udid udir uduk uirr ukcc ukrc ukur urbi urci urdu urib uric urik uriu urri uruk urur uuri uuuu

b-r-k bckdk bibic bibri biddu bidri biduk bidur birck birdu birur brick bridi brkic brrrr bruck brud- bruik bruiu bruri bucci bucic bucki bucku bucur buddu budki budur buici buick buiki buird bukid bukk- bukki burck burcu burdi buric burri burru buruc burud buruk ccccc cccii cciii cdiii cibir circk ciric cirr- cirri ckick cribb crick cruck cubi- cubic cubub cucui cucuk curbi curdi curic curri d-cru dc-uk dccic ddc-i ddddd ddruk dibri diddu dirck dridu driki druid druri du-ku dubbi dubi dubki dubuc ducic dudki duduc duduk dukku durci i-bid ibbur ibrik ibuki icbrr icici iiiii ikiru ikuri irbid ircii irid- iriki k-b-d kibbi kibi- kiiki kikki kikuu kirck kirdi kirki kirui kiuic kribi krici krick krubi kruki kubic kubik kubri kucuk kudki kudur kukri kukui kukur kurbu kurdi kurik kurir kurki kurku kuruc kurud kuruk rcirc ribbi ricci ricki ridic rikki rubbi rubid rubik rucci rudic rudik rudki rudkk ruiru ruric rurik rurki u-dub ubirr ukcdr ukrid urbic urduk uric- urric urubu