-er -ey -th ddd dde ddh ddo ddr ddt ddx ddy de- ded dee deh deo der det dex dey dh- dhd dhe dhh dho dhr dht dod doe doh doo dor dot dox doy drd dre dro drr drt drx dry dtd dte dth dto dtr dtt dtx dty dxd dxo dxr dxt dxx dy- dyd dye dyo dyr dyy ed- edd ede edh edo edr edt edx edy eed eee eeo eer eet eex eey ehd ehe ehh eho ehr eht eo- eod eoe eoh eoo eor eot erd ere erh ero err ert ery etd ete eth eto etr ett etx ety ex- exd exe exh exo exr ext exx exy eyd eye eyo eyr eyt hdd hde hdh hdo hdr hdt hdx hdy he- hed hee heh heo her het hex hey hhd hhe hhh hho hhr hht hhy hod hoe hoh hoo hor hot hox hoy hr- hrd hre hrh hro hrr hrt htd hte hth hto htr htt htx hty hxd hy- hyd hye hyh hyo hyr hyt hyy odd ode odh odo odr odt oed oee oeh oeo oer oet oex oey ohd ohe ohh oho ohr oht oo- ood ooh ooo oor oot oox or- ord ore orh oro orr ort orx ory ot- otd ote oth oto otr ott ox- oxo oxt oxx oxy oyd oye oyo rdd rde rdh rdo rdr rdt rdx rdy re- red ree reh reo rer ret rex rey rh- rhd rhe rhh rho rhr rht rod roe roh roo ror rot rox roy rrd rrh rrr rrt rtd rte rto rtr rtt rtx rty rxr ry- ryd rye ryo ryr ryy t-x tdd tde tdh tdo tdr tdt tdx tdy te- ted tee teh teo ter tet tex tey th- thd the thh tho thr tht thx thy to- tod toe toh too tor tot tox toy trd tre trh tro trr trt trx try ttd tte tth tto ttr ttt ttx tty txe txt tyd tye tyo tyr tyt xde xdh xdr xdt xed xee xer xet xex xhd xht xod xoo xor xot xox xrd xrt xrx xry xtr xtx xty xxo xxx xxy xyr xyy yde ydo ydt ydy yed yee yeh yeo yer yet yex yey yhe yht yod yoe yoo yor yot yox yoy yre yro yrt ytd yte yth yto ytr ytt yxe yxy yye yyt yyy