-er a-a aaa aad aae aag aan aar ad- ada add ade adg adn adr aea aed aee aeg aen aer ag- aga agd age agg agn agr an- ana and ane ang ann anr ar- ara ard are arg arn arr daa dad dae dag dan dar dda ddd dde ddg ddn ddr de- dea ded dee deg den der dga dgd dge dgg dgn dgr dna dnd dne dng dnn dnr dra drd dre drg drn drr eaa ead eae eag ean ear ed- eda edd ede edg edn edr eea eed eee eeg een eer ega egd ege egg egn egr en- ena end ene eng enn enr era erd ere erg ern err g-d gaa gad gae gag gan gar gda gdd gde gdn gdr ge- gea ged gee geg gen ger gga ggd ggg ggn ggr gna gnd gne gnn gnr gra grd gre grg grn grr naa nad nae nag nan nar nda ndd nde ndg ndn ndr ne- nea ned nee neg nen ner nga ngd nge ngg ngn nna nne nng nnn nra nrd nre nrg nrn nrr ra- raa rad rae rag ran rar rda rdd rde rdg rdn rdr re- rea red ree reg ren rer rga rgd rge rgg rgn rgr rna rnd rng rnn rnr rra rrd rrg rrn rrr