a-a a-b aaa aab aad aah aan aas ab- aba abb abd abh abn abs ad- ada adb add adh adn ads aha ahb ahd ahh ahn ahs an- ana anb and anh ann ans as- asa asb asd ash asn ass baa bab bad bah ban bas bba bbb bbd bbh bbn bbs bda bdb bdd bdh bds bha bhb bhd bhh bhs bna bnb bnd bnn bns bsa bsb bsd bsh bsn bss daa dab dad dah dan das dba dbb dbd dbh dbn dbs dda ddb ddd ddh ddn dds dh- dha dhb dhd dhh dhs dna dnb dnd dnh dnn dns dsa dsb dsd dsh dsn dss haa hab had hah han has hba hbb hbd hbh hbn hbs hda hdb hdd hdh hdn hds hha hhb hhd hhh hhn hhs hna hnb hnd hnh hnn hns hsa hsb hsd hsh hsn hss naa nab nad nah nan nas nba nbb nbd nbn nbs nda ndb ndd ndh ndn nds nha nhb nhd nhh nhn nhs nna nnb nnh nnn nns nsa nsb nsd nsh nsn nss saa sab sad sah san sas sba sbb sbd sbh sbn sbs sda sdb sdd sdh sdn sds sh- sha shb shd shh shn shs sna snb snd snn sns ss- ssa ssb ssd ssh ssn sss