a-a a-b a-i aaa aab aae aah aai aas ab- aba abb abe abh abi abs aea aeb aee aeh aei aes aha ahb ahe ahh ahi ahs ai- aia aib aie aih aii ais as- asa asb ase ash asi ass baa bab bae bah bai bas bba bbb bbe bbh bbi bbs be- bea beb bee beh bei bes bha bhb bhe bhh bhi bhs bi- bia bib bie bih bii bis bsa bsb bse bsh bsi bss eaa eab eae eah eai eas eba ebb ebe ebh ebi ebs eea eeb eee ees eha ehb ehe ehh ehi ehs eia eib eie eii eis es- esa esb ese esh esi ess h-i haa hab hae hah hai has hba hbb hbe hbh hbi hbs he- hea heb hee heh hei hes hha hhb hhe hhh hhi hhs hia hib hie hih hii his hsa hsb hse hsh hsi hss ia- iaa iab iae iah iai ias iba ibb ibe ibh ibi ibs ie- iea iee iei ies iha ihb ihe ihh ihi ihs iia iib iie iih iii iis is- isa isb ise ish isi iss saa sab sae sah sai sas sba sbb sbe sbh sbi sbs se- sea seb see seh sei ses sh- sha shb she shh shi shs sia sib sie sih sii sis ss- ssa ssb sse ssh ssi sss