-ey bbb bbe bbi bbk bbo bbt bby be- beb bee bei bek beo bet bey bi- bib bie bii bik bio bit biy bkb bke bkk bko bkt bob boe boi bok boo bot boy btb bte bti btk bto btt bty by- bye byi byk byo byt ebb ebe ebi ebk ebo ebt eby eeb eee eek eeo eet eey eib eie eii eik eio eit ekb eke eki eko ekt eky eo- eob eoe eoi eok eoo eot etb ete eti etk eto ett ety eye eyo eyt ibb ibe ibi ibk ibo ibt iby ie- iee iei iek iet iey iib iie iii iio iit ikb ike iki ikk iko ikt io- iob ioe ioi ioo iot itb ite iti itk ito itt ity iye iyo iyt iyy k-t kbb kbe kbi kbk kbo ke- keb kee kei kek keo ket key kib kie kii kik kio kit kkb kke kki kkk kkt kky kob koe koi kok koo kot koy ktb kte ktk kto ktt kye kyo kyt o-i ob- obb obe obi obk obo obt oby oeb oee oei oeo oet oey oib oie oii oik oio oit okb oke oki okk oko oo- oob ooi ook ooo oot ot- otb ote oti otk oto ott oye oyi oyo tbb tbe tbi tbk tbo tbt te- teb tee tei tek teo tet tey tib tie tii tik tio tit tiy tkb tke tkk tko tkt tky to- tob toe toi tok too tot toy ttb tte tti ttk tto ttt tty tye tyo tyt ybe ybi yby yeb yee yei yek yeo yet yey yie yii yio yit yki ykk yob yoe yoi yok yoo yot yoy yte ytk yto ytt yyb yye yyt yyy