a-a aaa aad aan aao aar aas ad- ada add adn ado adr ads an- ana and ann ano anr ans aoa aod aon aoo aor aos ar- ara ard arn aro arr ars as- asa asd asn aso asr ass daa dad dan dao dar das dda ddd ddn ddo ddr dds dna dnd dnn dno dnr dns doa dod don doo dor dos dra drd drn dro drr drs dsa dsd dsn dso dsr dss naa nad nan nao nar nas nda ndd ndn ndo ndr nds nna nnn nno nns no- noa nod non noo nor nos nra nrd nrn nro nrr nrs nsa nsd nsn nso nsr nss oaa oad oan oao oar oas oda odd odn odo odr ods on- ona ond onn ono onr ons oo- ooa ood oon ooo oor oos or- ora ord orn oro orr ors os- osa osd osn oso osr oss ra- raa rad ran rao rar ras rda rdd rdn rdo rdr rds rna rnd rnn rno rnr rns roa rod ron roo ror ros rra rrd rrn rrr rrs rsa rsd rsn rso rsr rss saa sad san sao sar sas sda sdd sdn sdo sdr sds sna snd snn sno snr sns soa sod son soo sor sos sr- sra srd srn sro srr srs ss- ssa ssd ssn sso ssr sss