a-a a-b aaa aab aad aah aan aar aas ab- aba abb abd abh abn abr abs ad- ada adb add adh adn adr ads aha ahb ahd ahh ahn ahr ahs an- ana anb and anh ann anr ans ar- ara arb ard arh arn arr ars as- asa asb asd ash asn asr ass baa bab bad bah ban bar bas bba bbb bbd bbh bbn bbr bbs bda bdb bdd bdh bdr bds bha bhb bhd bhh bhr bhs bna bnb bnd bnn bnr bns bra brb brd brh brn brr brs bsa bsb bsd bsh bsn bsr bss daa dab dad dah dan dar das dba dbb dbd dbh dbn dbr dbs dda ddb ddd ddh ddn ddr dds dh- dha dhb dhd dhh dhr dhs dna dnb dnd dnh dnn dnr dns dra drb drd drn drr drs dsa dsb dsd dsh dsn dsr dss haa hab had hah han har has hba hbb hbd hbh hbn hbr hbs hda hdb hdd hdh hdn hdr hds hha hhb hhd hhh hhn hhr hhs hna hnb hnd hnh hnn hns hr- hra hrb hrd hrh hrn hrr hrs hsa hsb hsd hsh hsn hsr hss naa nab nad nah nan nar nas nba nbb nbd nbn nbr nbs nda ndb ndd ndh ndn ndr nds nha nhb nhd nhh nhn nhr nhs nna nnb nnh nnn nns nra nrb nrd nrn nrr nrs nsa nsb nsd nsh nsn nsr nss ra- raa rab rad rah ran rar ras rba rbb rbd rbh rbn rbr rbs rda rdb rdd rdh rdn rdr rds rh- rha rhb rhd rhh rhn rhr rhs rna rnb rnd rnh rnn rnr rns rra rrb rrd rrh rrn rrr rrs rsa rsb rsd rsh rsn rsr rss saa sab sad sah san sar sas sba sbb sbd sbh sbn sbr sbs sda sdb sdd sdh sdn sdr sds sh- sha shb shd shh shn shr shs sna snb snd snn snr sns sr- sra srb srd srh srn srr srs ss- ssa ssb ssd ssh ssn ssr sss