-er a-a aaa aad aae aar aas aax ad- ada add ade adr ads adx aea aed aee aer aes aex ar- ara ard are arr ars arx as- asa asd ase asr ass asx ax- axa axe axr axs axx daa dad dae dar das dax dda ddd dde ddr dds ddx de- dea ded dee der des dex dra drd dre drr drs drx dsa dsd dse dsr dss dsx dxd dxr dxs dxx eaa ead eae ear eas eax ed- eda edd ede edr eds edx eea eed eee eer ees eex era erd ere err ers es- esa esd ese esr ess esx ex- exa exd exe exr exs exx ra- raa rad rae rar ras rax rda rdd rde rdr rds rdx re- rea red ree rer res rex rra rrd rrr rrs rsa rsd rse rsr rss rsx rxr rxs saa sad sae sar sas sax sda sdd sde sdr sds se- sea sed see ser ses sex sr- sra srd sre srr srs srx ss- ssa ssd sse ssr sss ssx sxs xaa xad xar xas xda xde xdr xds xed xee xer xes xex xrd xrx xsa xss xxx