-th bbb bbd bbh bbi bbt bby bdb bdd bdh bdi bdt bdy bhb bhd bhh bhi bht bi- bib bid bih bii bit biy btb btd bth bti btt bty by- byd byh byi byt dbb dbd dbh dbi dbt dby ddb ddd ddh ddi ddt ddy dh- dhb dhd dhh dhi dht di- dib did dih dii dit diy dtb dtd dth dti dtt dty dy- dyb dyd dyy h-i hbb hbd hbh hbi hbt hby hdb hdd hdh hdi hdt hdy hhb hhd hhh hhi hht hhy hib hid hih hii hit htb htd hth hti htt hty hy- hyb hyd hyh hyi hyt hyy i-d ibb ibd ibh ibi ibt iby idb idd idh idi idt idy ihb ihd ihh ihi iht ihy iib iid iih iii iit itb itd ith iti itt ity iyt iyy tbb tbd tbh tbi tbt tdb tdd tdh tdi tdt tdy th- thb thd thh thi tht thy tib tid tih tii tit tiy ttb ttd tth tti ttt tty tyd tyt ybi yby ydt ydy yhi yht yid yih yii yit ytd yth ytt yyb yyt yyy