a-a a-b a-i aaa aab aad aae aah aai aas ab- aba abb abd abe abh abi abs ad- ada adb add ade adh adi ads aea aeb aed aee aeh aei aes aha ahb ahd ahe ahh ahi ahs ai- aia aib aid aie aih aii ais as- asa asb asd ase ash asi ass baa bab bad bae bah bai bas bba bbb bbd bbe bbh bbi bbs bda bdb bdd bde bdh bdi bds be- bea beb bed bee beh bei bes bha bhb bhd bhe bhh bhi bhs bi- bia bib bid bie bih bii bis bsa bsb bsd bse bsh bsi bss daa dab dad dae dah dai das dba dbb dbd dbe dbh dbi dbs dda ddb ddd dde ddh ddi dds de- dea deb ded dee deh dei des dh- dha dhb dhd dhe dhh dhi dhs di- dia dib did die dih dii dis dsa dsb dsd dse dsh dsi dss eaa eab ead eae eah eai eas eba ebb ebd ebe ebh ebi ebs ed- eda edb edd ede edh edi eds eea eeb eed eee ees eha ehb ehd ehe ehh ehi ehs eia eib eid eie eii eis es- esa esb esd ese esh esi ess h-i haa hab had hae hah hai has hba hbb hbd hbe hbh hbi hbs hda hdb hdd hde hdh hdi hds he- hea heb hed hee heh hei hes hha hhb hhd hhe hhh hhi hhs hia hib hid hie hih hii his hsa hsb hsd hse hsh hsi hss i-d ia- iaa iab iad iae iah iai ias iba ibb ibd ibe ibh ibi ibs ida idb idd ide idh idi ids ie- iea ied iee iei ies iha ihb ihd ihe ihh ihi ihs iia iib iid iie iih iii iis is- isa isb isd ise ish isi iss saa sab sad sae sah sai sas sba sbb sbd sbe sbh sbi sbs sda sdb sdd sde sdh sdi sds se- sea seb sed see seh sei ses sh- sha shb shd she shh shi shs sia sib sid sie sih sii sis ss- ssa ssb ssd sse ssh ssi sss