-er a-a a-t aaa aad aae aar aat aau aax ad- ada add ade adr adt adu adx aea aed aee aer aet aeu aex ar- ara ard are arr art aru arx at- ata atd ate atr att atu atx au- aua aud aue aur aut aux ax- axa axe axr axt axx daa dad dae dar dat dau dax dda ddd dde ddr ddt ddu ddx de- dea ded dee der det deu dex dra drd dre drr drt dru drx dta dtd dte dtr dtt dtu dtx dua dud due dur dut dux dxd dxr dxt dxx eaa ead eae ear eat eau eax ed- eda edd ede edr edt edu edx eea eed eee eer eet eex era erd ere err ert eru eta etd ete etr ett etu etx eu- eua eud eue eur eut eux ex- exa exd exe exr ext exu exx ra- raa rad rae rar rat rau rax rda rdd rde rdr rdt rdu rdx re- rea red ree rer ret reu rex rra rrd rrr rrt rru rta rtd rte rtr rtt rtu rtx rua rud rue rur rut ruu rux rxr t-x taa tad tae tar tat tau tax tda tdd tde tdr tdt tdu tdx te- tea ted tee ter tet teu tex tra trd tre trr trt tru trx tta ttd tte ttr ttt ttu ttx tua tud tue tur tut tuu tux txe txt txu ua- uaa uad uae uar uat uau uda udd ude udr udt udu udx uea ued uee uer uet ur- ura urd ure urr urt uru urx uta utd ute utr utt utu utx uua uue uur uut uuu uxr uxt uxu xaa xad xar xat xau xda xde xdr xdt xed xee xer xet xeu xex xrd xrt xrx xtr xtx xue xxx