-th bbb bbd bbh bbi bbr bbt bby bdb bdd bdh bdi bdr bdt bdy bhb bhd bhh bhi bhr bht bi- bib bid bih bii bir bit biy brb brd brh bri brr brt bry btb btd bth bti btr btt bty by- byd byh byi byr byt dbb dbd dbh dbi dbr dbt dby ddb ddd ddh ddi ddr ddt ddy dh- dhb dhd dhh dhi dhr dht di- dib did dih dii dir dit diy drb drd dri drr drt dry dtb dtd dth dti dtr dtt dty dy- dyb dyd dyr dyy h-i hbb hbd hbh hbi hbr hbt hby hdb hdd hdh hdi hdr hdt hdy hhb hhd hhh hhi hhr hht hhy hib hid hih hii hir hit hr- hrb hrd hrh hri hrr hrt htb htd hth hti htr htt hty hy- hyb hyd hyh hyi hyr hyt hyy i-d ibb ibd ibh ibi ibr ibt iby idb idd idh idi idr idt idy ihb ihd ihh ihi ihr iht ihy iib iid iih iii iir iit ir- irb ird iri irr irt iry itb itd ith iti itt ity iyr iyt iyy rbb rbd rbh rbi rbr rbt rdb rdd rdh rdi rdr rdt rdy rh- rhb rhd rhh rhi rhr rht rib rid rih rii rir rit riy rrb rrd rrh rri rrr rrt rtb rtd rti rtr rtt rty ry- ryd ryr ryy tbb tbd tbh tbi tbr tbt tdb tdd tdh tdi tdr tdt tdy th- thb thd thh thi thr tht thy tib tid tih tii tir tit tiy trb trd trh tri trr trt try ttb ttd tth tti ttr ttt tty tyd tyr tyt ybi ybr yby ydt ydy yhi yht yid yih yii yir yit yrt ytd yth ytr ytt yyb yyt yyy