a-a a-b aaa aab aae aah aas aau ab- aba abb abe abh abs abu aea aeb aee aeh aes aeu aha ahb ahe ahh ahs ahu as- asa asb ase ash ass asu au- aua aub aue auh aus b-u baa bab bae bah bas bau bba bbb bbe bbh bbs bbu be- bea beb bee beh bes beu bha bhb bhe bhh bhs bhu bsa bsb bse bsh bss bsu bua bub bue buh bus buu eaa eab eae eah eas eau eba ebb ebe ebh ebs ebu eea eeb eee ees eha ehb ehe ehh ehs ehu es- esa esb ese esh ess esu eu- eua eub eue eus haa hab hae hah has hau hba hbb hbe hbh hbs hbu he- hea heb hee heh hes heu hha hhb hhe hhh hhs hhu hsa hsb hse hsh hss hsu hua hub hue huh hus huu saa sab sae sah sas sau sba sbb sbe sbh sbs sbu se- sea seb see seh ses seu sh- sha shb she shh shs shu ss- ssa ssb sse ssh sss ssu sua sub sue suh sus suu ua- uaa uab uae uah uas uau uba ubb ube ubh ubs ubu uea ueb uee ueh ues uha uhb uhe uhh uhs uhu usa usb use ush uss usu uua uue uus uuu