-ey bbb bbe bbi bbk bbn bbo bbs bby be- beb bee bei bek ben beo bes bey bi- bib bie bii bik bin bio bis biy bkb bke bkk bkn bko bks bnb bne bni bnk bnn bno bns bob boe boi bok bon boo bos boy bsb bse bsi bsk bsn bso bss bsy by- bye byi byk byn byo bys ebb ebe ebi ebk ebn ebo ebs eby eeb eee eek een eeo ees eey eib eie eii eik ein eio eis ekb eke eki eko eks eky en- enb ene eni enk enn eno ens eny eo- eob eoe eoi eok eon eoo eos es- esb ese esi esk esn eso ess esy eye eyn eyo eys ibb ibe ibi ibk ibn ibo ibs iby ie- iee iei iek ien ies iey iib iie iii iin iio iis ikb ike iki ikk iko iks in- inb ine ini ink inn ino ins iny io- iob ioe ioi ion ioo ios is- isb ise isi isk isn iso iss isy iye iyo iys iyy kbb kbe kbi kbk kbn kbo kbs ke- keb kee kei kek ken keo kes key kib kie kii kik kin kio kis kkb kke kki kkk kkn kks kky kn- kne kni knk knn kno kob koe koi kok kon koo kos koy ksb kse ksi ksk ksn kso kss kye kyn kyo kys n-i nbb nbe nbi nbk nbn nbo nbs ne- neb nee nei nek nen neo nes ney nib nie nii nik nin nio nis nke nki nkk nkn nko nks nky nnb nne nni nnk nnn nno nns no- nob noe noi nok non noo nos noy nsb nse nsi nsk nsn nso nss nsy nye nyk nyn nyo nys nyy o-i ob- obb obe obi obk obn obo obs oby oeb oee oei oen oeo oes oey oib oie oii oik oin oio ois okb oke oki okk oko oks on- onb one oni onk onn ono ons ony oo- oob ooi ook oon ooo oos os- osb ose osi osk osn oso oss oye oyi oyo oys sbb sbe sbi sbk sbn sbo sbs sby se- seb see sei sek sen seo ses sey sib sie sii sik sin sio sis sk- skb ske ski skk sko sks sky snb sne sni snk snn sno sns sny sob soe soi sok son soo sos soy ss- ssb sse ssi ssk ssn sso sss sy- syb sye syi syk syn sys ybe ybi ybs yby yeb yee yei yek yen yeo yes yey yie yii yin yio yis yki ykk ykn yne ynk ynn yns yny yob yoe yoi yok yon yoo yos yoy ysb yse ysi ysk yso yss ysy yyb yye yys yyy