-er -ey bbb bbe bbi bbk bbn bbo bbr bby be- beb bee bei bek ben beo ber bev bey bi- bib bie bii bik bin bio bir biv biy bkb bke bkk bkn bko bkr bkv bnb bne bni bnk bnn bno bnr bnv bob boe boi bok bon boo bor bov boy brb bre bri brk brn bro brr brv bry bvb bve bvi bvk bvn bvo bvr bvv by- bye byi byk byn byo byr ebb ebe ebi ebk ebn ebo ebr ebv eby eeb eee eek een eeo eer eev eey eib eie eii eik ein eio eir eiv ekb eke eki eko ekr ekv eky en- enb ene eni enk enn eno enr env eny eo- eob eoe eoi eok eon eoo eor erb ere eri erk ern ero err erv ery evb eve evi evn evo evr evv evy eye eyn eyo eyr i-v ibb ibe ibi ibk ibn ibo ibr ibv iby ie- iee iei iek ien ier iev iey iib iie iii iin iio iir ikb ike iki ikk iko ikr ikv in- inb ine ini ink inn ino inr inv iny io- iob ioe ioi ion ioo ior iov ir- irb ire iri irk irn iro irr irv iry ivb ive ivi ivo ivr ivv ivy iye iyo iyr iyy kbb kbe kbi kbk kbn kbo kbr ke- keb kee kei kek ken keo ker kev key kib kie kii kik kin kio kir kiv kkb kke kki kkk kkn kkr kkv kky kn- kne kni knk knn kno knr kob koe koi kok kon koo kor koy kri krk krn kro krr krv kry kvb kvi kvk kvn kvo kvr kvv kye kyn kyo kyr n-i nbb nbe nbi nbk nbn nbo nbr nbv ne- neb nee nei nek nen neo ner nev ney nib nie nii nik nin nio nir niv nke nki nkk nkn nko nkr nky nnb nne nni nnk nnn nno nnv no- nob noe noi nok non noo nor nov noy nrb nre nri nrk nrn nro nrr nrv nry nvb nve nvi nvk nvn nvv nye nyk nyn nyo nyy o-i ob- obb obe obi obk obn obo obr obv oby oeb oee oei oen oeo oer oey oib oie oii oik oin oio oir oiv okb oke oki okk oko okr on- onb one oni onk onn ono onr ony oo- oob ooi ook oon ooo oor oov or- orb ore ori ork orn oro orr orv ory ov- ovb ove ovi ovo ovv oye oyi oyo rbb rbe rbi rbk rbn rbo rbr re- reb ree rei rek ren reo rer rev rey rib rie rii rik rin rio rir riv riy rkb rke rkk rko rkv rky rnb rni rnn rno rnr rnv rny rob roe roi rok ron roo ror rov roy rrb rri rrk rrn rrr rvb rve rvi rvn rvo rvr rvv rvy ry- rye ryk ryn ryo ryr ryy v-e vbi vbk vbo vbr vbv veb vee vei vek ven veo ver vey vi- vib vie vii vik vin vio vir viv viy vkb vn- vni vno vnr vnv vob voe voi vok von voo vor vov voy vrb vre vri vrk vrn vrr vry vvb vvi vvo vvr vvv vye vyn ybe ybi ybr yby yeb yee yei yek yen yeo yer yev yey yie yii yin yio yir yki ykk ykn yne ynk ynn yny yob yoe yoi yok yon yoo yor yoy yre yrn yro yve yvi yvo yvr yvy yyb yye yyy