-er a-a a-t aaa aad aae aag aar aat ad- ada add ade adg adr adt aea aed aee aeg aer aet ag- aga agd age agg agr agt ar- ara ard are arg arr art at- ata atd ate atg atr att daa dad dae dag dar dat dda ddd dde ddg ddr ddt de- dea ded dee deg der det dga dgd dge dgg dgr dgt dra drd dre drg drr drt dta dtd dte dtg dtr dtt eaa ead eae eag ear eat ed- eda edd ede edg edr edt eea eed eee eeg eer eet ega egd ege egg egr egt era erd ere erg err ert eta etd ete etg etr ett g-d gaa gad gae gag gar gat gda gdd gde gdr gdt ge- gea ged gee geg ger get gga ggd ggg ggr ggt gra grd gre grg grr grt gta gtd gte gtg gtr gtt ra- raa rad rae rag rar rat rda rdd rde rdg rdr rdt re- rea red ree reg rer ret rga rgd rge rgg rgr rgt rra rrd rrg rrr rrt rta rtd rte rtg rtr rtt taa tad tae tag tar tat tda tdd tde tdg tdr tdt te- tea ted tee teg ter tet tga tge tgg tgr tgt tra trd tre trg trr trt tta ttd tte ttg ttr ttt