-er b-u bbb bbc bbe bbk bbr bbu bcb bcc bce bck bcr bcu be- beb bec bee bek ber beu bkb bkc bke bkk bkr brb bre brk brr bru bub buc bue buk bur buu c-- cbb cbc cbe cbk cbr cbu ccb ccc cce cck ccr ccu ce- ceb cec cee cek cer ceu ckb ckc crb crc cre crk crr cru cub cuc cue cuk cur cuu ebb ebc ebe ebk ebr ebu ec- ecb ecc ece eck ecr ecu eeb eec eee eek eer ekb ekc eke ekr eku erb erc ere erk err eru eu- eub euc eue eur kbb kbc kbe kbk kbr kbu kcb kcc kce kck kcr kcu ke- keb kec kee kek ker kkb kkc kke kkk kkr kku krc krk krr kru kub kuc kue kuk kur kuu rbb rbc rbe rbk rbr rbu rcb rcc rce rcr rcu re- reb rec ree rek rer reu rkb rkc rke rkk rku rrb rrc rrk rrr rru rub ruc rue ruk rur ruu ubb ubc ube ubk ubr ubu ucb ucc uce uck ucr ucu ueb uec uee uer ukb ukc uke ukk ukr uku ur- urb urc ure urk urr uru uuc uue uur uuu

bbbb bbeb bbrc bcbc bccc bcec bcer bcru bcuc bebb bebe beck becu beeb beek beer beke berc bere berk berr beru beuk beur brcb brce breb brec bree brek brer brkb brrr bruc brue bubb bube bubu bucc buce buck bucu buer bueu buke bukk buku bur- burb bure burk burr buru cbbc cbcc cbce cbcr cbcu cbec cbee cber cbkr cbre ccbc cccb cccc cccu ccee ccrc ccre ccuc cebu cec- cece ceeb ceec ceke cer- cerc cere ckbc ckbe ckck cker ckrc crbc crbu crcc crce crcr cre- creb crec cree creu crkc crub crue cruk cub- cubb cube cucc cuce cuck cuek cuer cuk- cuke curb cure curr ebbc ebbr ebcc eber ebru ebur ecbc ecbe eccb eccc ecce ecrc ecrr ecru eeee eeke eerc ekeb ekek eker ekur erbb erbe ercc erce ereb erec erer erke errc erre erub eruc erur eubc euer eur- eurc eure kbbb kbbc kbbe kbbk kbbr kbbu kbcb kbce kbck kbcr kbcu kbeb kbec kbee kbek kber kbkb kbkk kbkr kbrb kbrc kbre kbrk kbru kbub kbuc kbue kbuk kbur kbuu kcbc kcbk kcbr kcbu kccb kccc kcck kccr kccu kceb kcec kcee kceu kckc kckk kckr kcrc kcrr kcru kcub kcue kcuk kebb kebc kebe kebr kebu keck kecr keek keer kekb kekc keke keku ker- kerb kerc kere kerk kerr keru keur kkbb kkbe kkbr kkcb kkck kkcr kkkk kkrb kkrc kkre kkrk kkrr kkuu krbb krbe krbk krbr krcb krcc krce krcu kreb krec kree krek kreu krkc krke krkk krkr krku krrb krrc krre krrk krrr kruc krue kruk krur kubb kubc kube kubr kubu kucb kucc kuce kucr kuek kueu kuke kukk kuku kurb kure kurk kurr kuru kuub kuuk kuur kuuu rbbb rbbr rcbc rccb rccc rebb rebe rebk rebu recc rece reck recr recu reeb reek reke rere reru reue reuk reuu rrrr rubb rube rubu ruce ruck ruer ruke rukk ruku rurc rure ruru ubbe ubek uber ucbc ucrc ukcc ukek ukeu ukrc ukur urbe ure- urke urre uruk urur uuuu

b-r-k bbbee be-er bebek beber becke becue beebe beeke beker bekke berbe berck bercu berec berek berk- berke berre berru beuer beure brebu brece breck breek breer breke brere breu- brrrr bruce bruck bruer bruke bubbe buber bucek bucku bucur buker bukk- burck burcu burek burke burru buruc buruk ccccc cebec ceber ceere cerbu cerc- cerce cerec cerer cerke cerre crebe crece creek creer creke creu- creue cruce cruck cruke crure cubbe cubeb cuber cubub cucuk cuker curce curer curre ebber ebure ecker eecke eeeee ekker ekuku ekuru erbbe erber erere erkec eruke eucre eurre kebbe kebek keber kecer keere kekec kerek kerre kreek kreke kreuk kubek kuber kucer kucuk kukec kukur kurbu kurek kurku kurre kuruc kuruk rebbe rebec reber recce recke recue recur reece reere rekke rere- reree reuer rubee ruber rubke rucer ruere rukke rurec u-cee uber- uceku ukeke urker urubu uruce urucu uuuuu

bbbbbb becker becure beebee beeker bekker berbee berber bercke bereke berere berker berrer berube beurre breere brekke breuer brubru bruker bruree bubber bububu bucker bukkur bukuru burbur burcer burree burrer buruku c-cube ceecee ceruce creeke cubber cubeck cubube cucube cucurb curber currer eburru eebree erbree kebber keeker kerber kereru kerker kerkuk keuruu kreker krueck kubeer kukere kurkcu kurree kururu rebbec rebeck rebeuc rebuck rebuke recrue recuer recurb recure reeker reubke reuere rubbee rubber rucker rurkee uecker

bbbbbbb bebeeru berbere bkerke brekker breuker brubeck brucker burbure cerbere cerebr- cubukcu currere eerbeek erukkur kebbuck kee-kee krebeck kreeker kurkure rebuker recurer rekeure

bbbbbbbb berebere buckbuck buruburu buurkerk cekerek cucurucu curucucu kukukuku kukuruku kuruburu kurukuru recurrer rekeuere

beckerek beebeebee bukeerere keek-keek

berberburr kukkurukuu

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