-er -ey bbb bbe bbi bbk bbn bbo bbr bby be- beb bee bei bek ben beo ber bey bi- bib bie bii bik bin bio bir biy bkb bke bkk bkn bko bkr bnb bne bni bnk bnn bno bnr bob boe boi bok bon boo bor boy brb bre bri brk brn bro brr bry by- bye byi byk byn byo byr ebb ebe ebi ebk ebn ebo ebr eby eeb eee eek een eeo eer eey eib eie eii eik ein eio eir ekb eke eki eko ekr eky en- enb ene eni enk enn eno enr eny eo- eob eoe eoi eok eon eoo eor erb ere eri erk ern ero err ery eye eyn eyo eyr ibb ibe ibi ibk ibn ibo ibr iby ie- iee iei iek ien ier iey iib iie iii iin iio iir ikb ike iki ikk iko ikr in- inb ine ini ink inn ino inr iny io- iob ioe ioi ion ioo ior ir- irb ire iri irk irn iro irr iry iye iyo iyr iyy kbb kbe kbi kbk kbn kbo kbr ke- keb kee kei kek ken keo ker key kib kie kii kik kin kio kir kkb kke kki kkk kkn kkr kky kn- kne kni knk knn kno knr kob koe koi kok kon koo kor koy kri krk krn kro krr kry kye kyn kyo kyr n-i nbb nbe nbi nbk nbn nbo nbr ne- neb nee nei nek nen neo ner ney nib nie nii nik nin nio nir nke nki nkk nkn nko nkr nky nnb nne nni nnk nnn nno no- nob noe noi nok non noo nor noy nrb nre nri nrk nrn nro nrr nry nye nyk nyn nyo nyy o-i ob- obb obe obi obk obn obo obr oby oeb oee oei oen oeo oer oey oib oie oii oik oin oio oir okb oke oki okk oko okr on- onb one oni onk onn ono onr ony oo- oob ooi ook oon ooo oor or- orb ore ori ork orn oro orr ory oye oyi oyo rbb rbe rbi rbk rbn rbo rbr re- reb ree rei rek ren reo rer rey rib rie rii rik rin rio rir riy rkb rke rkk rko rky rnb rni rnn rno rnr rny rob roe roi rok ron roo ror roy rrb rri rrk rrn rrr ry- rye ryk ryn ryo ryr ryy ybe ybi ybr yby yeb yee yei yek yen yeo yer yey yie yii yin yio yir yki ykk ykn yne ynk ynn yny yob yoe yoi yok yon yoo yor yoy yre yrn yro yyb yye yyy