-er a-a a-t aaa aad aae aan aar aat aax ad- ada add ade adn adr adt adx aea aed aee aen aer aet aex an- ana and ane ann anr ant anx ar- ara ard are arn arr art arx at- ata atd ate atn atr att atx ax- axa axe axn axr axt axx daa dad dae dan dar dat dax dda ddd dde ddn ddr ddt ddx de- dea ded dee den der det dex dna dnd dne dnn dnr dnt dra drd dre drn drr drt drx dta dtd dte dtn dtr dtt dtx dxd dxn dxr dxt dxx eaa ead eae ean ear eat eax ed- eda edd ede edn edr edt edx eea eed eee een eer eet eex en- ena end ene enn enr ent era erd ere ern err ert eta etd ete etn etr ett etx ex- exa exd exe exr ext exx naa nad nae nan nar nat nax nda ndd nde ndn ndr ndt ne- nea ned nee nen ner net nex nna nne nnn nnt nra nrd nre nrn nrr nrt nrx nta ntd nte ntn ntr ntt ntx nxd nxt ra- raa rad rae ran rar rat rax rda rdd rde rdn rdr rdt rdx re- rea red ree ren rer ret rex rna rnd rnn rnr rnt rra rrd rrn rrr rrt rta rtd rte rtn rtr rtt rtx rxr t-x taa tad tae tan tar tat tax tda tdd tde tdn tdr tdt tdx te- tea ted tee ten ter tet tex tna tnd tne tnn tnr tnt tnx tra trd tre trn trr trt trx tta ttd tte ttn ttr ttt ttx txe txn txt xaa xad xan xar xat xda xde xdr xdt xed xee xen xer xet xex xna xrd xrt xrx xtr xtx xxx