a-a a-i aaa aai aan aao aas ai- aia aii ain aio ais an- ana ani ann ano ans aoa aoi aon aoo aos as- asa asi asn aso ass ia- iaa iai ian iao ias iia iii iin iio iis in- ina ini inn ino ins io- ioa ioi ion ioo ios is- isa isi isn iso iss n-i naa nai nan nao nas nia nii nin nio nis nna nni nnn nno nns no- noa noi non noo nos nsa nsi nsn nso nss o-i oaa oai oan oao oas oia oii oin oio ois on- ona oni onn ono ons oo- ooa ooi oon ooo oos os- osa osi osn oso oss saa sai san sao sas sia sii sin sio sis sna sni snn sno sns soa soi son soo sos ss- ssa ssi ssn sso sss