-er -ey a-a aaa aae aan aar aax aay aea aee aen aer aex aey an- ana ane ann anr anx any ar- ara are arn arr arx ary ax- axa axe axn axr axx ay- aya aye ayn ayr ayx eaa eae ean ear eax eea eee een eer eex eey en- ena ene enn enr eny era ere ern err ery ex- exa exe exr exx exy eya eye eyn eyr naa nae nan nar nax nay ne- nea nee nen ner nex ney nna nne nnn nra nre nrn nrr nrx nry nya nye nyn nyx nyy ra- raa rae ran rar rax ray re- rea ree ren rer rex rey rna rnn rnr rny rra rrn rrr rxr ry- rya rye ryn ryr ryy xaa xan xar xee xen xer xex xna xrx xry xxx xxy xyr xyy yaa yae yan yar yax yay yea yee yen yer yex yey yna yne ynn yny yra yre yrn yxa yxe yxy yye yyy