-er a-a a-t aaa aae aag aan aao aar aat aax aea aee aeg aen aeo aer aet aex ag- aga age agg agn ago agr agt agx an- ana ane ang ann ano anr ant anx aoa aoe aog aon aoo aor aot aox ar- ara are arg arn aro arr art arx at- ata ate atg atn ato atr att atx ax- axa axe axn axo axr axt axx eaa eae eag ean eao ear eat eax eea eee eeg een eeo eer eet eex ega ege egg egn ego egr egt egx en- ena ene eng enn eno enr ent eo- eoa eoe eog eon eoo eor eot era ere erg ern ero err ert eta ete etg etn eto etr ett etx ex- exa exe exo exr ext exx gaa gae gag gan gao gar gat ge- gea gee geg gen geo ger get gex gga ggg ggn ggo ggr ggt gna gne gnn gno gnr gnt goa goe gog gon goo gor got gox gra gre grg grn gro grr grt grx gta gte gtg gtn gto gtr gtt gtx gxa gxt naa nae nag nan nao nar nat nax ne- nea nee neg nen neo ner net nex nga nge ngg ngn ngo ngt nna nne nng nnn nno nnt no- noa noe nog non noo nor not nox nra nre nrg nrn nro nrr nrt nrx nta nte ntg ntn nto ntr ntt ntx nxt oaa oae oag oan oao oar oat oax oea oee oeg oen oeo oer oet oex oga oge ogg ogn ogo ogt ogx on- ona one ong onn ono onr ont onx oo- ooa oog oon ooo oor oot oox or- ora ore org orn oro orr ort orx ot- ota ote otg otn oto otr ott ox- oxa oxn oxo oxt oxx ra- raa rae rag ran rao rar rat rax re- rea ree reg ren reo rer ret rex rga rge rgg rgn rgo rgr rgt rgx rna rng rnn rno rnr rnt roa roe rog ron roo ror rot rox rra rrg rrn rrr rrt rta rte rtg rtn rto rtr rtt rtx rxr t-x taa tae tag tan tao tar tat tax te- tea tee teg ten teo ter tet tex tga tge tgg tgn tgo tgr tgt tna tne tng tnn tno tnr tnt tnx to- toa toe tog ton too tor tot tox tra tre trg trn tro trr trt trx tta tte ttg ttn tto ttr ttt ttx txe txn txt xaa xag xan xar xat xee xeg xen xer xet xex xge xna xno xoa xog xon xoo xor xot xox xrt xrx xtr xtx xxo xxx