a-a a-i aaa aai aan aao aar aas aax ai- aia aii ain aio air ais aix an- ana ani ann ano anr ans anx aoa aoi aon aoo aor aos aox ar- ara ari arn aro arr ars arx as- asa asi asn aso asr ass asx ax- axa axi axn axo axr axs axx ia- iaa iai ian iao iar ias iia iii iin iio iir iis iix in- ina ini inn ino inr ins inx io- ioa ioi ion ioo ior ios ir- ira iri irn iro irr irs irx is- isa isi isn iso isr iss ixi ixn n-i naa nai nan nao nar nas nax nia nii nin nio nir nis nix nna nni nnn nno nns no- noa noi non noo nor nos nox nra nri nrn nro nrr nrs nrx nsa nsi nsn nso nsr nss nsx o-i oaa oai oan oao oar oas oax oia oii oin oio oir ois on- ona oni onn ono onr ons onx oo- ooa ooi oon ooo oor oos oox or- ora ori orn oro orr ors orx os- osa osi osn oso osr oss osx ox- oxa oxi oxn oxo oxx ra- raa rai ran rao rar ras rax ria rii rin rio rir ris rix rna rni rnn rno rnr rns roa roi ron roo ror ros rox rra rri rrn rrr rrs rsa rsi rsn rso rsr rss rsx rxr rxs saa sai san sao sar sas sax sia sii sin sio sir sis six sna sni snn sno snr sns soa soi son soo sor sos sox sr- sra sri srn sro srr srs srx ss- ssa ssi ssn sso ssr sss ssx sxi sxn sxs xaa xan xar xas xia xii xin xio xis xix xna xno xns xoa xoi xon xoo xor xos xox xrx xsa xsi xss xxi xxo xxx