bbb bbi bbn bbo bbr bbt bbx bby bi- bib bii bin bio bir bit bix biy bnb bni bnn bno bnr bnt bnx bob boi bon boo bor bot box boy brb bri brn bro brr brt brx bry btb bti btn bto btr btt btx bty bxb bxi bxn bxo bxx by- byi byn byo byr byt ibb ibi ibn ibo ibr ibt ibx iby iib iii iin iio iir iit iix in- inb ini inn ino inr int inx iny io- iob ioi ion ioo ior iot ir- irb iri irn iro irr irt irx iry itb iti itn ito itt itx ity ixi ixn ixy iyo iyr iyt iyy n-i nbb nbi nbn nbo nbr nbt nbx nib nii nin nio nir nit nix nnb nni nnn nno nnt no- nob noi non noo nor not nox noy nrb nri nrn nro nrr nrt nrx nry ntb nti ntn nto ntr ntt ntx nxt nyn nyo nyt nyx nyy o-i ob- obb obi obn obo obr obt obx oby oib oii oin oio oir oit on- onb oni onn ono onr ont onx ony oo- oob ooi oon ooo oor oot oox or- orb ori orn oro orr ort orx ory ot- otb oti otn oto otr ott ox- oxb oxi oxn oxo oxt oxx oxy oyi oyo rbb rbi rbn rbo rbr rbt rbx rib rii rin rio rir rit rix riy rnb rni rnn rno rnr rnt rny rob roi ron roo ror rot rox roy rrb rri rrn rrr rrt rtb rti rtn rto rtr rtt rtx rty rxr ry- ryn ryo ryr ryy t-x tbb tbi tbn tbo tbr tbt tib tii tin tio tir tit tix tiy tnb tni tnn tno tnr tnt tnx to- tob toi ton too tor tot tox toy trb tri trn tro trr trt trx try ttb tti ttn tto ttr ttt ttx tty txi txn txt tyn tyo tyr tyt xbr xbx xii xin xio xit xix xno xoi xon xoo xor xot xox xrt xrx xry xti xtr xtx xty xxi xxo xxx xxy xyr xyy ybi ybr yby yii yin yio yir yit ynn yny yob yoi yon yoo yor yot yox yoy yrn yro yrt ytn yto ytr ytt yxy yyb yyt yyy