-th bbb bbd bbh bbo bbr bbt bby bdb bdd bdh bdo bdr bdt bdy bhb bhd bhh bho bhr bht bob bod boh boo bor bot boy brb brd brh bro brr brt bry btb btd bth bto btr btt bty by- byd byh byo byr byt dbb dbd dbh dbo dbr dbt dby ddb ddd ddh ddo ddr ddt ddy dh- dhb dhd dhh dho dhr dht dob dod doh doo dor dot doy drb drd dro drr drt dry dtb dtd dth dto dtr dtt dty dy- dyb dyd dyo dyr dyy hbb hbd hbh hbo hbr hbt hby hdb hdd hdh hdo hdr hdt hdy hhb hhd hhh hho hhr hht hhy hob hod hoh hoo hor hot hoy hr- hrb hrd hrh hro hrr hrt htb htd hth hto htr htt hty hy- hyb hyd hyh hyo hyr hyt hyy ob- obb obd obh obo obr obt oby odb odd odh odo odr odt ohd ohh oho ohr oht oo- oob ood ooh ooo oor oot or- orb ord orh oro orr ort ory ot- otb otd oth oto otr ott oyd oyo rbb rbd rbh rbo rbr rbt rdb rdd rdh rdo rdr rdt rdy rh- rhb rhd rhh rho rhr rht rob rod roh roo ror rot roy rrb rrd rrh rrr rrt rtb rtd rto rtr rtt rty ry- ryd ryo ryr ryy tbb tbd tbh tbo tbr tbt tdb tdd tdh tdo tdr tdt tdy th- thb thd thh tho thr tht thy to- tob tod toh too tor tot toy trb trd trh tro trr trt try ttb ttd tth tto ttr ttt tty tyd tyo tyr tyt ybr yby ydo ydt ydy yht yob yod yoo yor yot yoy yro yrt ytd yth yto ytr ytt yyb yyt yyy