-ey bbb bbe bbi bbn bbo bby be- beb bee bei ben beo bey bi- bib bie bii bin bio biy bnb bne bni bnn bno bob boe boi bon boo boy by- bye byi byn byo ebb ebe ebi ebn ebo eby eeb eee een eeo eey eib eie eii ein eio en- enb ene eni enn eno eny eo- eob eoe eoi eon eoo eye eyn eyo ibb ibe ibi ibn ibo iby ie- iee iei ien iey iib iie iii iin iio in- inb ine ini inn ino iny io- iob ioe ioi ion ioo iye iyo iyy n-i nbb nbe nbi nbn nbo ne- neb nee nei nen neo ney nib nie nii nin nio nnb nne nni nnn nno no- nob noe noi non noo noy nye nyn nyo nyy o-i ob- obb obe obi obn obo oby oeb oee oei oen oeo oey oib oie oii oin oio on- onb one oni onn ono ony oo- oob ooi oon ooo oye oyi oyo ybe ybi yby yeb yee yei yen yeo yey yie yii yin yio yne ynn yny yob yoe yoi yon yoo yoy yyb yye yyy