a-a a-b aaa aab aad aah aan aao aas ab- aba abb abd abh abn abo abs ad- ada adb add adh adn ado ads aha ahb ahd ahh ahn aho ahs an- ana anb and anh ann ano ans aoa aob aod aoh aon aoo aos as- asa asb asd ash asn aso ass baa bab bad bah ban bao bas bba bbb bbd bbh bbn bbo bbs bda bdb bdd bdh bdo bds bha bhb bhd bhh bho bhs bna bnb bnd bnn bno bns boa bob bod boh bon boo bos bsa bsb bsd bsh bsn bso bss daa dab dad dah dan dao das dba dbb dbd dbh dbn dbo dbs dda ddb ddd ddh ddn ddo dds dh- dha dhb dhd dhh dho dhs dna dnb dnd dnh dnn dno dns doa dob dod doh don doo dos dsa dsb dsd dsh dsn dso dss haa hab had hah han hao has hba hbb hbd hbh hbn hbo hbs hda hdb hdd hdh hdn hdo hds hha hhb hhd hhh hhn hho hhs hna hnb hnd hnh hnn hno hns hoa hob hod hoh hon hoo hos hsa hsb hsd hsh hsn hss naa nab nad nah nan nao nas nba nbb nbd nbn nbo nbs nda ndb ndd ndh ndn ndo nds nha nhb nhd nhh nhn nhs nna nnb nnh nnn nno nns no- noa nob nod noh non noo nos nsa nsb nsd nsh nsn nso nss oaa oab oad oah oan oao oas ob- oba obb obd obh obn obo obs oda odb odd odh odn odo ods oha ohd ohh ohn oho ohs on- ona onb ond onh onn ono ons oo- ooa oob ood ooh oon ooo oos os- osa osb osd osh osn oso oss saa sab sad sah san sao sas sba sbb sbd sbh sbn sbo sbs sda sdb sdd sdh sdn sdo sds sh- sha shb shd shh shn sho shs sna snb snd snn sno sns soa sob sod soh son soo sos ss- ssa ssb ssd ssh ssn sso sss