a-a a-b a-i aaa aab aad aah aai aao aas ab- aba abb abd abh abi abo abs ad- ada adb add adh adi ado ads aha ahb ahd ahh ahi aho ahs ai- aia aib aid aih aii aio ais aoa aob aod aoh aoi aoo aos as- asa asb asd ash asi aso ass baa bab bad bah bai bao bas bba bbb bbd bbh bbi bbo bbs bda bdb bdd bdh bdi bdo bds bha bhb bhd bhh bhi bho bhs bi- bia bib bid bih bii bio bis boa bob bod boh boi boo bos bsa bsb bsd bsh bsi bso bss daa dab dad dah dai dao das dba dbb dbd dbh dbi dbo dbs dda ddb ddd ddh ddi ddo dds dh- dha dhb dhd dhh dhi dho dhs di- dia dib did dih dii dio dis doa dob dod doh doi doo dos dsa dsb dsd dsh dsi dso dss h-i haa hab had hah hai hao has hba hbb hbd hbh hbi hbo hbs hda hdb hdd hdh hdi hdo hds hha hhb hhd hhh hhi hho hhs hia hib hid hih hii hio his hoa hob hod hoh hoi hoo hos hsa hsb hsd hsh hsi hss i-d ia- iaa iab iad iah iai iao ias iba ibb ibd ibh ibi ibo ibs ida idb idd idh idi ido ids iha ihb ihd ihh ihi iho ihs iia iib iid iih iii iio iis io- ioa iob iod ioh ioi ioo ios is- isa isb isd ish isi iso iss o-i oaa oab oad oah oai oao oas ob- oba obb obd obh obi obo obs oda odb odd odh odi odo ods oha ohd ohh ohi oho ohs oia oib oid oii oio ois oo- ooa oob ood ooh ooi ooo oos os- osa osb osd osh osi oso oss saa sab sad sah sai sao sas sba sbb sbd sbh sbi sbo sbs sda sdb sdd sdh sdi sdo sds sh- sha shb shd shh shi sho shs sia sib sid sih sii sio sis soa sob sod soh soi soo sos ss- ssa ssb ssd ssh ssi sso sss