-er -ey bbb bbd bbe bbi bbk bbn bbo bbr bby bdb bdd bde bdi bdk bdo bdr bdy be- beb bed bee bei bek ben beo ber bey bi- bib bid bie bii bik bin bio bir biy bkb bke bkk bkn bko bkr bnb bnd bne bni bnk bnn bno bnr bob bod boe boi bok bon boo bor boy brb brd bre bri brk brn bro brr bry by- byd bye byi byk byn byo byr dbb dbd dbe dbi dbk dbn dbo dbr dby ddb ddd dde ddi ddk ddn ddo ddr ddy de- deb ded dee dei dek den deo der dey di- dib did die dii dik din dio dir diy dkb dke dki dkk dko dkr dnb dnd dne dni dnk dnn dno dnr dny dob dod doe doi dok don doo dor doy drb drd dre dri drk drn dro drr dry dy- dyb dyd dye dyk dyn dyo dyr dyy ebb ebd ebe ebi ebk ebn ebo ebr eby ed- edb edd ede edi edk edn edo edr edy eeb eed eee eek een eeo eer eey eib eid eie eii eik ein eio eir ekb ekd eke eki eko ekr eky en- enb end ene eni enk enn eno enr eny eo- eob eod eoe eoi eok eon eoo eor erb erd ere eri erk ern ero err ery eyd eye eyn eyo eyr i-d ibb ibd ibe ibi ibk ibn ibo ibr iby idb idd ide idi idk idn ido idr idy ie- ied iee iei iek ien ier iey iib iid iie iii iin iio iir ikb ike iki ikk iko ikr in- inb ind ine ini ink inn ino inr iny io- iob iod ioe ioi ion ioo ior ir- irb ird ire iri irk irn iro irr iry iye iyo iyr iyy kbb kbd kbe kbi kbk kbn kbo kbr kdb kde kdk kdo kdr kdy ke- keb ked kee kei kek ken keo ker key kib kid kie kii kik kin kio kir kkb kke kki kkk kkn kkr kky kn- knd kne kni knk knn kno knr kob kod koe koi kok kon koo kor koy krd kri krk krn kro krr kry kyd kye kyn kyo kyr n-i nbb nbd nbe nbi nbk nbn nbo nbr ndb ndd nde ndi ndk ndn ndo ndr ndy ne- neb ned nee nei nek nen neo ner ney nib nid nie nii nik nin nio nir nke nki nkk nkn nko nkr nky nnb nne nni nnk nnn nno no- nob nod noe noi nok non noo nor noy nrb nrd nre nri nrk nrn nro nrr nry nyd nye nyk nyn nyo nyy o-i ob- obb obd obe obi obk obn obo obr oby odb odd ode odi odn odo odr oeb oed oee oei oen oeo oer oey oib oid oie oii oik oin oio oir okb okd oke oki okk oko okr on- onb ond one oni onk onn ono onr ony oo- oob ood ooi ook oon ooo oor or- orb ord ore ori ork orn oro orr ory oyd oye oyi oyo rbb rbd rbe rbi rbk rbn rbo rbr rdb rdd rde rdi rdn rdo rdr rdy re- reb red ree rei rek ren reo rer rey rib rid rie rii rik rin rio rir riy rkb rke rkk rko rky rnb rnd rni rnn rno rnr rny rob rod roe roi rok ron roo ror roy rrb rrd rri rrk rrn rrr ry- ryd rye ryk ryn ryo ryr ryy ybe ybi ybr yby yde ydn ydo ydy yeb yed yee yei yek yen yeo yer yey yid yie yii yin yio yir yki ykk ykn ynd yne ynk ynn yny yob yod yoe yoi yok yon yoo yor yoy yre yrn yro yyb yye yyy