-ic a-a a-b a-c a-i aaa aab aac aae aah aai aas ab- aba abb abc abe abh abi abs ac- aca acb acc ace ach aci acs aea aeb aec aee aeh aei aes aha ahb ahc ahe ahh ahi ahs ai- aia aib aic aie aih aii ais as- asa asb asc ase ash asi ass baa bab bac bae bah bai bas bba bbb bbc bbe bbh bbi bbs bca bcb bcc bce bch bci bcs be- bea beb bec bee beh bei bes bha bhb bhc bhe bhh bhi bhs bi- bia bib bic bie bih bii bis bsa bsb bsc bse bsh bsi bss c-- caa cab cac cae cah cai cas cba cbb cbc cbe cbh cbi cbs cca ccb ccc cce cch cci ccs ce- cea ceb cec cee ceh cei ces ch- cha chb chc che chh chi chs ci- cia cib cic cie cih cii cis csa csb csc cse csh csi css eaa eab eac eae eah eai eas eba ebb ebc ebe ebh ebi ebs ec- eca ecb ecc ece ech eci ecs eea eeb eec eee ees eha ehb ehc ehe ehh ehi ehs eia eib eic eie eii eis es- esa esb esc ese esh esi ess h-i haa hab hac hae hah hai has hba hbb hbc hbe hbh hbi hbs hca hcb hcc hce hch hci hcs he- hea heb hec hee heh hei hes hha hhb hhc hhe hhh hhi hhs hia hib hic hie hih hii his hsa hsb hsc hse hsh hsi hss ia- iaa iab iac iae iah iai ias iba ibb ibc ibe ibh ibi ibs ica icb icc ice ich ici ics ie- iea iec iee iei ies iha ihb ihc ihe ihh ihi ihs iia iib iic iie iih iii iis is- isa isb isc ise ish isi iss saa sab sac sae sah sai sas sba sbb sbc sbe sbh sbi sbs sca scb scc sce sch sci scs se- sea seb sec see seh sei ses sh- sha shb shc she shh shi shs sia sib sic sie sih sii sis ss- ssa ssb ssc sse ssh ssi sss