a-a aaa aad aan aar aas ad- ada add adn adr ads an- ana and ann anr ans ar- ara ard arn arr ars as- asa asd asn asr ass daa dad dan dar das dda ddd ddn ddr dds dna dnd dnn dnr dns dra drd drn drr drs dsa dsd dsn dsr dss naa nad nan nar nas nda ndd ndn ndr nds nna nnn nns nra nrd nrn nrr nrs nsa nsd nsn nsr nss ra- raa rad ran rar ras rda rdd rdn rdr rds rna rnd rnn rnr rns rra rrd rrn rrr rrs rsa rsd rsn rsr rss saa sad san sar sas sda sdd sdn sdr sds sna snd snn snr sns sr- sra srd srn srr srs ss- ssa ssd ssn ssr sss