-er a-a a-q a-t aaa aae aan aaq aar aat aax aea aee aen aeq aer aet aex an- ana ane ann anq anr ant anx aqa aqn aqr aqt ar- ara are arn arq arr art arx at- ata ate atn atr att atx ax- axa axe axn axr axt axx eaa eae ean ear eat eax eea eee een eer eet eex en- ena ene enn enr ent eqa eqe eqn eqq eqt era ere ern erq err ert eta ete etn etr ett etx ex- exa exe exr ext exx naa nae nan nar nat nax ne- nea nee nen ner net nex nna nne nnn nnt nqt nra nre nrn nrr nrt nrx nta nte ntn ntq ntr ntt ntx nxt qaa qan qar qat qax qee qen qet qex qne qnx qqq qra qre qrt qta qtq qtr qxe ra- raa rae ran raq rar rat rax re- rea ree ren req rer ret rex rna rnn rnr rnt rqn rra rrn rrq rrr rrt rta rte rtn rtq rtr rtt rtx rxr t-x taa tae tan taq tar tat tax te- tea tee ten teq ter tet tex tna tne tnn tnq tnr tnt tnx tra tre trn trq trr trt trx tta tte ttn ttr ttt ttx txe txn txt xaa xan xar xat xee xen xeq xer xet xex xna xqt xrt xrx xtr xtx xxx