-ic a-a a-b a-c a-i aaa aab aac aae aah aai ab- aba abb abc abe abh abi ac- aca acb acc ace ach aci aea aeb aec aee aeh aei aha ahb ahc ahe ahh ahi ai- aia aib aic aie aih aii baa bab bac bae bah bai bba bbb bbc bbe bbh bbi bca bcb bcc bce bch bci be- bea beb bec bee beh bei bha bhb bhc bhe bhh bhi bi- bia bib bic bie bih bii c-- caa cab cac cae cah cai cba cbb cbc cbe cbh cbi cca ccb ccc cce cch cci ce- cea ceb cec cee ceh cei ch- cha chb chc che chh chi ci- cia cib cic cie cih cii eaa eab eac eae eah eai eba ebb ebc ebe ebh ebi ec- eca ecb ecc ece ech eci eea eeb eec eee eha ehb ehc ehe ehh ehi eia eib eic eie eii h-i haa hab hac hae hah hai hba hbb hbc hbe hbh hbi hca hcb hcc hce hch hci he- hea heb hec hee heh hei hha hhb hhc hhe hhh hhi hia hib hic hie hih hii ia- iaa iab iac iae iah iai iba ibb ibc ibe ibh ibi ica icb icc ice ich ici ie- iea iec iee iei iha ihb ihc ihe ihh ihi iia iib iic iie iih iii