a-a a-b a-i aaa aab aad aah aai aao aar aas ab- aba abb abd abh abi abo abr abs ad- ada adb add adh adi ado adr ads aha ahb ahd ahh ahi aho ahr ahs ai- aia aib aid aih aii aio air ais aoa aob aod aoh aoi aoo aor aos ar- ara arb ard arh ari aro arr ars as- asa asb asd ash asi aso asr ass baa bab bad bah bai bao bar bas bba bbb bbd bbh bbi bbo bbr bbs bda bdb bdd bdh bdi bdo bdr bds bha bhb bhd bhh bhi bho bhr bhs bi- bia bib bid bih bii bio bir bis boa bob bod boh boi boo bor bos bra brb brd brh bri bro brr brs bsa bsb bsd bsh bsi bso bsr bss daa dab dad dah dai dao dar das dba dbb dbd dbh dbi dbo dbr dbs dda ddb ddd ddh ddi ddo ddr dds dh- dha dhb dhd dhh dhi dho dhr dhs di- dia dib did dih dii dio dir dis doa dob dod doh doi doo dor dos dra drb drd dri dro drr drs dsa dsb dsd dsh dsi dso dsr dss h-i haa hab had hah hai hao har has hba hbb hbd hbh hbi hbo hbr hbs hda hdb hdd hdh hdi hdo hdr hds hha hhb hhd hhh hhi hho hhr hhs hia hib hid hih hii hio hir his hoa hob hod hoh hoi hoo hor hos hr- hra hrb hrd hrh hri hro hrr hrs hsa hsb hsd hsh hsi hsr hss i-d ia- iaa iab iad iah iai iao iar ias iba ibb ibd ibh ibi ibo ibr ibs ida idb idd idh idi ido idr ids iha ihb ihd ihh ihi iho ihr ihs iia iib iid iih iii iio iir iis io- ioa iob iod ioh ioi ioo ior ios ir- ira irb ird iri iro irr irs is- isa isb isd ish isi iso isr iss o-i oaa oab oad oah oai oao oar oas ob- oba obb obd obh obi obo obr obs oda odb odd odh odi odo odr ods oha ohd ohh ohi oho ohr ohs oia oib oid oii oio oir ois oo- ooa oob ood ooh ooi ooo oor oos or- ora orb ord orh ori oro orr ors os- osa osb osd osh osi oso osr oss ra- raa rab rad rah rai rao rar ras rba rbb rbd rbh rbi rbo rbr rbs rda rdb rdd rdh rdi rdo rdr rds rh- rha rhb rhd rhh rhi rho rhr rhs ria rib rid rih rii rio rir ris roa rob rod roh roi roo ror ros rra rrb rrd rrh rri rrr rrs rsa rsb rsd rsh rsi rso rsr rss saa sab sad sah sai sao sar sas sba sbb sbd sbh sbi sbo sbr sbs sda sdb sdd sdh sdi sdo sdr sds sh- sha shb shd shh shi sho shr shs sia sib sid sih sii sio sir sis soa sob sod soh soi soo sor sos sr- sra srb srd srh sri sro srr srs ss- ssa ssb ssd ssh ssi sso ssr sss