-er a-a a-i a-t aaa aae aai aan aap aar aat aax aea aee aei aen aep aer aet aex ai- aia aie aii ain aip air ait aix an- ana ane ani ann anp anr ant anx ap- apa ape api apn app apr apt apx ar- ara are ari arn arp arr art arx at- ata ate ati atn atp atr att atx ax- axa axe axi axn axp axr axt axx eaa eae eai ean eap ear eat eax eea eee een eep eer eet eex eia eie eii ein eip eir eit eix en- ena ene eni enn enp enr ent ep- epa epe epi epn epp epr ept epx era ere eri ern erp err ert eta ete eti etn etp etr ett etx ex- exa exe exi exp exr ext exx ia- iaa iae iai ian iap iar iat ie- iea iee iei ien iep ier iet iex iia iie iii iin iip iir iit iix in- ina ine ini inn inp inr int inx ipa ipe ipi ipn ipp ipr ipt ipx ir- ira ire iri irn irp irr irt irx ita ite iti itn itp itt itx ixe ixi ixn n-i naa nae nai nan nap nar nat nax ne- nea nee nei nen nep ner net nex nia nie nii nin nip nir nit nix nna nne nni nnn nnp nnt npa npe npi npn npp npr npt nra nre nri nrn nrp nrr nrt nrx nta nte nti ntn ntp ntr ntt ntx nxt p-p paa pae pai pan pap par pat pax pea pee pei pen pep per pet pex pia pie pii pin pip pir pit pix pn- pna pne pni pnn pnp pnr pnt pnx ppa ppe ppi ppn ppp ppr ppt ppx pra pre pri prn prp prr prt prx pt- pta pte pti ptn ptp ptr ptt ptx pxe pxr pxt ra- raa rae rai ran rap rar rat rax re- rea ree rei ren rep rer ret rex ria rie rii rin rip rir rit rix rna rni rnn rnp rnr rnt rpa rpe rpi rpn rpp rpr rpt rpx rra rri rrn rrp rrr rrt rta rte rti rtn rtp rtr rtt rtx rxp rxr t-x taa tae tai tan tap tar tat tax te- tea tee tei ten tep ter tet tex tia tie tii tin tip tir tit tix tna tne tni tnn tnp tnr tnt tnx tpa tpe tpi tpn tpp tpr tpt tpx tra tre tri trn trp trr trt trx tta tte tti ttn ttp ttr ttt ttx txe txi txn txt xaa xan xap xar xat xee xen xep xer xet xex xia xie xii xin xit xix xna xpa xpe xpn xpp xpt xrt xrx xti xtp xtr xtx xxi xxp xxx