bbb bbi bbk bbn bbo bbr bby bi- bib bii bik bin bio bir biy biz bkb bkk bkn bko bkr bnb bni bnk bnn bno bnr bnz bob boi bok bon boo bor boy boz brb bri brk brn bro brr bry brz by- byi byk byn byo byr byz bzn bzo bzr bzz ibb ibi ibk ibn ibo ibr iby ibz iib iii iin iio iir ikb iki ikk iko ikr in- inb ini ink inn ino inr iny io- iob ioi ion ioo ior ir- irb iri irk irn iro irr iry iyo iyr iyy izi izo izy izz k-z kbb kbi kbk kbn kbo kbr kbz kib kii kik kin kio kir kiz kkb kki kkk kkn kkr kky kn- kni knk knn kno knr kob koi kok kon koo kor koy koz kri krk krn kro krr kry kyn kyo kyr kyz kzo kzy n-i nbb nbi nbk nbn nbo nbr nib nii nik nin nio nir niz nki nkk nkn nko nkr nky nnb nni nnk nnn nno nnz no- nob noi nok non noo nor noy noz nrb nri nrk nrn nro nrr nry nrz nyk nyn nyo nyy nzb nzi nzo nzz o-i ob- obb obi obk obn obo obr oby oib oii oik oin oio oir oiz okb oki okk oko okr on- onb oni onk onn ono onr ony oo- oob ooi ook oon ooo oor or- orb ori ork orn oro orr ory orz oyi oyo ozo ozz rbb rbi rbk rbn rbo rbr rib rii rik rin rio rir riy riz rkb rkk rko rky rkz rnb rni rnn rno rnr rny rnz rob roi rok ron roo ror roy roz rrb rri rrk rrn rrr ry- ryk ryn ryo ryr ryy ryz rzb rzo rzy ybi ybr yby ybz yii yin yio yir yiz yki ykk ykn ynk ynn yny yob yoi yok yon yoo yor yoy yrn yro yyb yyy yyz yzb yzr yzy zbb zbr zby zib zik zin zio zir ziz znn zno zo- zob zoi zok zon zoo zor zro zzr zzy zzz