-er a-a a-t aaa aae aan aao aar aat aax aea aee aen aeo aer aet aex an- ana ane ann ano anr ant anx aoa aoe aon aoo aor aot aox ar- ara are arn aro arr art arx at- ata ate atn ato atr att atx ax- axa axe axn axo axr axt axx eaa eae ean eao ear eat eax eea eee een eeo eer eet eex en- ena ene enn eno enr ent eo- eoa eoe eon eoo eor eot era ere ern ero err ert eta ete etn eto etr ett etx ex- exa exe exo exr ext exx naa nae nan nao nar nat nax ne- nea nee nen neo ner net nex nna nne nnn nno nnt no- noa noe non noo nor not nox nra nre nrn nro nrr nrt nrx nta nte ntn nto ntr ntt ntx nxt oaa oae oan oao oar oat oax oea oee oen oeo oer oet oex on- ona one onn ono onr ont onx oo- ooa oon ooo oor oot oox or- ora ore orn oro orr ort orx ot- ota ote otn oto otr ott ox- oxa oxn oxo oxt oxx ra- raa rae ran rao rar rat rax re- rea ree ren reo rer ret rex rna rnn rno rnr rnt roa roe ron roo ror rot rox rra rrn rrr rrt rta rte rtn rto rtr rtt rtx rxr t-x taa tae tan tao tar tat tax te- tea tee ten teo ter tet tex tna tne tnn tno tnr tnt tnx to- toa toe ton too tor tot tox tra tre trn tro trr trt trx tta tte ttn tto ttr ttt ttx txe txn txt xaa xan xar xat xee xen xer xet xex xna xno xoa xon xoo xor xot xox xrt xrx xtr xtx xxo xxx