-er -th a-a a-t aaa aad aae aah aar aat aax ad- ada add ade adh adr adt adx aea aed aee aeh aer aet aex aha ahd ahe ahh ahr aht ahx ar- ara ard are arh arr art arx at- ata atd ate ath atr att atx ax- axa axe axh axr axt axx daa dad dae dah dar dat dax dda ddd dde ddh ddr ddt ddx de- dea ded dee deh der det dex dh- dha dhd dhe dhh dhr dht dra drd dre drr drt drx dta dtd dte dth dtr dtt dtx dxd dxr dxt dxx eaa ead eae eah ear eat eax ed- eda edd ede edh edr edt edx eea eed eee eer eet eex eha ehd ehe ehh ehr eht era erd ere erh err ert eta etd ete eth etr ett etx ex- exa exd exe exh exr ext exx haa had hae hah har hat hax hda hdd hde hdh hdr hdt hdx he- hea hed hee heh her het hex hha hhd hhe hhh hhr hht hr- hra hrd hre hrh hrr hrt hta htd hte hth htr htt htx hxd ra- raa rad rae rah rar rat rax rda rdd rde rdh rdr rdt rdx re- rea red ree reh rer ret rex rh- rha rhd rhe rhh rhr rht rra rrd rrh rrr rrt rta rtd rte rtr rtt rtx rxr t-x taa tad tae tah tar tat tax tda tdd tde tdh tdr tdt tdx te- tea ted tee teh ter tet tex th- tha thd the thh thr tht thx tra trd tre trh trr trt trx tta ttd tte tth ttr ttt ttx txe txt xaa xad xar xat xda xde xdh xdr xdt xed xee xer xet xex xhd xht xrd xrt xrx xtr xtx xxx