-th a-a a-b a-t aaa aab aad aah aao aar aat aay ab- aba abb abd abh abo abr abt aby ad- ada adb add adh ado adr adt ady aha ahb ahd ahh aho ahr aht ahy aoa aob aod aoh aoo aor aot ar- ara arb ard arh aro arr art ary at- ata atb atd ath ato atr att ay- aya ayd ayh ayo ayr ayt baa bab bad bah bao bar bat bay bba bbb bbd bbh bbo bbr bbt bby bda bdb bdd bdh bdo bdr bdt bdy bha bhb bhd bhh bho bhr bht boa bob bod boh boo bor bot boy bra brb brd brh bro brr brt bry bta btb btd bth bto btr btt bty by- bya byd byh byo byr byt daa dab dad dah dao dar dat day dba dbb dbd dbh dbo dbr dbt dby dda ddb ddd ddh ddo ddr ddt ddy dh- dha dhb dhd dhh dho dhr dht doa dob dod doh doo dor dot doy dra drb drd dro drr drt dry dta dtb dtd dth dto dtr dtt dty dy- dya dyb dyd dyo dyr dyy haa hab had hah hao har hat hay hba hbb hbd hbh hbo hbr hbt hby hda hdb hdd hdh hdo hdr hdt hdy hha hhb hhd hhh hho hhr hht hhy hoa hob hod hoh hoo hor hot hoy hr- hra hrb hrd hrh hro hrr hrt hta htb htd hth hto htr htt hty hy- hya hyb hyd hyh hyo hyr hyt hyy oaa oab oad oah oao oar oat ob- oba obb obd obh obo obr obt oby oda odb odd odh odo odr odt oha ohd ohh oho ohr oht oo- ooa oob ood ooh ooo oor oot or- ora orb ord orh oro orr ort ory ot- ota otb otd oth oto otr ott oya oyd oyo ra- raa rab rad rah rao rar rat ray rba rbb rbd rbh rbo rbr rbt rda rdb rdd rdh rdo rdr rdt rdy rh- rha rhb rhd rhh rho rhr rht roa rob rod roh roo ror rot roy rra rrb rrd rrh rrr rrt rta rtb rtd rto rtr rtt rty ry- rya ryd ryo ryr ryy taa tab tad tah tao tar tat tay tba tbb tbd tbh tbo tbr tbt tda tdb tdd tdh tdo tdr tdt tdy th- tha thb thd thh tho thr tht thy to- toa tob tod toh too tor tot toy tra trb trd trh tro trr trt try tta ttb ttd tth tto ttr ttt tty tya tyd tyo tyr tyt yaa yab yad yah yao yar yat yay ybr yby yda ydo ydt ydy yha yht yob yod yoo yor yot yoy yra yro yrt yta ytd yth yto ytr ytt yyb yyt yyy