-er -ey ddd dde ddh ddi ddo ddr ddx ddy de- ded dee deh dei deo der dex dey dh- dhd dhe dhh dhi dho dhr di- did die dih dii dio dir dix diy dod doe doh doi doo dor dox doy drd dre dri dro drr drx dry dxd dxi dxo dxr dxx dy- dyd dye dyo dyr dyy ed- edd ede edh edi edo edr edx edy eed eee eeo eer eex eey ehd ehe ehh ehi eho ehr eid eie eii eio eir eix eo- eod eoe eoh eoi eoo eor erd ere erh eri ero err ery ex- exd exe exh exi exo exr exx exy eyd eye eyo eyr h-i hdd hde hdh hdi hdo hdr hdx hdy he- hed hee heh hei heo her hex hey hhd hhe hhh hhi hho hhr hhy hid hie hih hii hio hir hix hod hoe hoh hoi hoo hor hox hoy hr- hrd hre hrh hri hro hrr hxd hy- hyd hye hyh hyi hyo hyr hyy i-d idd ide idh idi ido idr idx idy ie- ied iee iei ier iex iey ihd ihe ihh ihi iho ihr ihy iid iie iih iii iio iir iix io- iod ioe ioh ioi ioo ior ir- ird ire iri iro irr irx iry ixe ixi ixy iye iyo iyr iyy o-i odd ode odh odi odo odr oed oee oeh oei oeo oer oex oey ohd ohe ohh ohi oho ohr oid oie oii oio oir oo- ood ooh ooi ooo oor oox or- ord ore orh ori oro orr orx ory ox- oxi oxo oxx oxy oyd oye oyi oyo rdd rde rdh rdi rdo rdr rdx rdy re- red ree reh rei reo rer rex rey rh- rhd rhe rhh rhi rho rhr rid rie rih rii rio rir rix riy rod roe roh roi roo ror rox roy rrd rrh rri rrr rxr ry- ryd rye ryo ryr ryy xde xdh xdi xdr xed xee xer xex xhd xie xii xio xix xod xoi xoo xor xox xrd xrx xry xxi xxo xxx xxy xyr xyy yde ydo ydy yed yee yeh yei yeo yer yex yey yhe yhi yid yie yih yii yio yir yod yoe yoi yoo yor yox yoy yre yro yxe yxy yye yyy