-er b-u bbb bbe bbk bbr bbu be- beb bee bek ber beu bkb bke bkk bkr brb bre brk brr bru bub bue buk bur buu ebb ebe ebk ebr ebu eeb eee eek eer ekb eke ekr eku erb ere erk err eru eu- eub eue eur kbb kbe kbk kbr kbu ke- keb kee kek ker kkb kke kkk kkr kku krk krr kru kub kue kuk kur kuu rbb rbe rbk rbr rbu re- reb ree rek rer reu rkb rke rkk rku rrb rrk rrr rru rub rue ruk rur ruu ubb ube ubk ubr ubu ueb uee uer ukb uke ukk ukr uku ur- urb ure urk urr uru uue uur uuu

bbbb bbeb bebb bebe beeb beek beer beke bere berk berr beru beuk beur breb bree brek brer brkb brrr brue bubb bube bubu buer bueu buke bukk buku bur- burb bure burk burr buru ebbr eber ebru ebur eeee eeke ekeb ekek eker ekur erbb erbe ereb erer erke erre erub erur euer eur- eure kbbb kbbe kbbk kbbr kbbu kbeb kbee kbek kber kbkb kbkk kbkr kbrb kbre kbrk kbru kbub kbue kbuk kbur kbuu kebb kebe kebr kebu keek keer kekb keke keku ker- kerb kere kerk kerr keru keur kkbb kkbe kkbr kkkk kkrb kkre kkrk kkrr kkuu krbb krbe krbk krbr kreb kree krek kreu krke krkk krkr krku krrb krre krrk krrr krue kruk krur kubb kube kubr kubu kuek kueu kuke kukk kuku kurb kure kurk kurr kuru kuub kuuk kuur kuuu rbbb rbbr rebb rebe rebk rebu reeb reek reke rere reru reue reuk reuu rrrr rubb rube rubu ruer ruke rukk ruku rure ruru ubbe ubek uber ukek ukeu ukur urbe ure- urke urre uruk urur uuuu

b-r-k bbbee be-er bebek beber beebe beeke beker bekke berbe berek berk- berke berre berru beuer beure brebu breek breer breke brere breu- brrrr bruer bruke bubbe buber buker bukk- burek burke burru buruk ebber ebure eeeee ekker ekuku ekuru erbbe erber erere eruke eurre kebbe kebek keber keere kerek kerre kreek kreke kreuk kubek kuber kukur kurbu kurek kurku kurre kuruk rebbe reber reere rekke rere- reree reuer rubee ruber ruere rukke uber- ukeke urker urubu uuuuu

bbbbbb beebee beeker bekker berbee berber bereke berere berker berrer berube beurre breere brekke breuer brubru bruker bruree bubber bububu bukkur bukuru burbur burree burrer buruku eburru eebree erbree kebber keeker kerber kereru kerker kerkuk keuruu kreker kubeer kukere kurree kururu rebuke reeker reubke reuere rubbee rubber rurkee

bbbbbbb bebeeru berbere bkerke brekker breuker burbure eerbeek erukkur kee-kee kreeker kurkure rebuker rekeure

bbbbbbbb berebere buruburu buurkerk kukukuku kukuruku kuruburu kurukuru rekeuere

beebeebee bukeerere keek-keek

berberburr kukkurukuu

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