a-a a-c aaa aac aad aan aao aar aas ac- aca acc acd acn aco acr acs ad- ada adc add adn ado adr ads an- ana anc and ann ano anr ans aoa aoc aod aon aoo aor aos ar- ara arc ard arn aro arr ars as- asa asc asd asn aso asr ass c-- caa cac cad can cao car cas cca ccc ccd ccn cco ccr ccs cda cdc cdd cdn cdo cdr cds cn- cna cnc cnd cnn cno cnr cns co- coa coc cod con coo cor cos cra crc crd crn cro crr crs csa csc csd csn cso csr css daa dac dad dan dao dar das dca dcc dcd dcn dco dcr dcs dda ddc ddd ddn ddo ddr dds dna dnc dnd dnn dno dnr dns doa doc dod don doo dor dos dra drc drd drn dro drr drs dsa dsc dsd dsn dso dsr dss naa nac nad nan nao nar nas nca ncc ncd ncn nco ncr ncs nda ndc ndd ndn ndo ndr nds nna nnc nnn nno nns no- noa noc nod non noo nor nos nra nrc nrd nrn nro nrr nrs nsa nsc nsd nsn nso nsr nss oaa oac oad oan oao oar oas oc- oca occ ocd ocn oco ocr ocs oda odc odd odn odo odr ods on- ona onc ond onn ono onr ons oo- ooa ooc ood oon ooo oor oos or- ora orc ord orn oro orr ors os- osa osc osd osn oso osr oss ra- raa rac rad ran rao rar ras rca rcc rcd rcn rco rcr rcs rda rdc rdd rdn rdo rdr rds rna rnc rnd rnn rno rnr rns roa roc rod ron roo ror ros rra rrc rrd rrn rrr rrs rsa rsc rsd rsn rso rsr rss saa sac sad san sao sar sas sca scc scd scn sco scr scs sda sdc sdd sdn sdo sdr sds sna snc snd snn sno snr sns soa soc sod son soo sor sos sr- sra src srd srn sro srr srs ss- ssa ssc ssd ssn sso ssr sss