b-u bbb bbk bbr bbu bkb bkk bkr brb brk brr bru bub buk bur buu kbb kbk kbr kbu kkb kkk kkr kku krk krr kru kub kuk kur kuu rbb rbk rbr rbu rkb rkk rku rrb rrk rrr rru rub ruk rur ruu ubb ubk ubr ubu ukb ukk ukr uku ur- urb urk urr uru uur uuu

bbbb brkb brrr bubb bubu bukk buku bur- burb burk burr buru kbbb kbbk kbbr kbbu kbkb kbkk kbkr kbrb kbrk kbru kbub kbuk kbur kbuu kkbb kkbr kkkk kkrb kkrk kkrr kkuu krbb krbk krbr krkk krkr krku krrb krrk krrr kruk krur kubb kubr kubu kukk kuku kurb kurk kurr kuru kuub kuuk kuur kuuu rbbb rbbr rrrr rubb rubu rukk ruku ruru ukur uruk urur uuuu

b-r-k brrrr bukk- burru buruk kukur kurbu kurku kuruk urubu uuuuu

bbbbbb brubru bububu bukkur bukuru burbur kururu

bbbbbbb

bbbbbbbb buruburu kukukuku kukuruku kuruburu kurukuru

kukkurukuu

bbbbbbbbbbbbbbb