a-a aaa aad aan aao aas ad- ada add adn ado ads an- ana and ann ano ans aoa aod aon aoo aos as- asa asd asn aso ass daa dad dan dao das dda ddd ddn ddo dds dna dnd dnn dno dns doa dod don doo dos dsa dsd dsn dso dss naa nad nan nao nas nda ndd ndn ndo nds nna nnn nno nns no- noa nod non noo nos nsa nsd nsn nso nss oaa oad oan oao oas oda odd odn odo ods on- ona ond onn ono ons oo- ooa ood oon ooo oos os- osa osd osn oso oss saa sad san sao sas sda sdd sdn sdo sds sna snd snn sno sns soa sod son soo sos ss- ssa ssd ssn sso sss