-er a-a a-t aaa aad aae aag aar aat aau aax ad- ada add ade adg adr adt adu adx aea aed aee aeg aer aet aeu aex ag- aga agd age agg agr agt agu agx ar- ara ard are arg arr art aru arx at- ata atd ate atg atr att atu atx au- aua aud aue aug aur aut aux ax- axa axe axr axt axx daa dad dae dag dar dat dau dax dda ddd dde ddg ddr ddt ddu ddx de- dea ded dee deg der det deu dex dga dgd dge dgg dgr dgt dgu dra drd dre drg drr drt dru drx dta dtd dte dtg dtr dtt dtu dtx dua dud due dug dur dut dux dxd dxr dxt dxx eaa ead eae eag ear eat eau eax ed- eda edd ede edg edr edt edu edx eea eed eee eeg eer eet eex ega egd ege egg egr egt egu egx era erd ere erg err ert eru eta etd ete etg etr ett etu etx eu- eua eud eue eug eur eut eux ex- exa exd exe exr ext exu exx g-d gaa gad gae gag gar gat gau gda gdd gde gdr gdt gdu gdx ge- gea ged gee geg ger get geu gex gga ggd ggg ggr ggt ggu gra grd gre grg grr grt gru grx gta gtd gte gtg gtr gtt gtu gtx gu- gua gud gue gug gur gut guu gxa gxt ra- raa rad rae rag rar rat rau rax rda rdd rde rdg rdr rdt rdu rdx re- rea red ree reg rer ret reu rex rga rgd rge rgg rgr rgt rgx rra rrd rrg rrr rrt rru rta rtd rte rtg rtr rtt rtu rtx rua rud rue rug rur rut ruu rux rxr t-x taa tad tae tag tar tat tau tax tda tdd tde tdg tdr tdt tdu tdx te- tea ted tee teg ter tet teu tex tga tge tgg tgr tgt tgu tra trd tre trg trr trt tru trx tta ttd tte ttg ttr ttt ttu ttx tua tud tue tug tur tut tuu tux txe txt txu ua- uaa uad uae uag uar uat uau uda udd ude udg udr udt udu udx uea ued uee ueg uer uet uga uge ugg ugr ugt ugu ugx ur- ura urd ure urg urr urt uru urx uta utd ute utr utt utu utx uua uue uug uur uut uuu uxr uxt uxu xaa xad xag xar xat xau xda xde xdr xdt xed xee xeg xer xet xeu xex xge xrd xrt xrx xtr xtx xue xxx