-ic a-a a-b a-c a-i aaa aab aac aah aai ab- aba abb abc abh abi ac- aca acb acc ach aci aha ahb ahc ahh ahi ai- aia aib aic aih aii baa bab bac bah bai bba bbb bbc bbh bbi bca bcb bcc bch bci bha bhb bhc bhh bhi bi- bia bib bic bih bii c-- caa cab cac cah cai cba cbb cbc cbh cbi cca ccb ccc cch cci ch- cha chb chc chh chi ci- cia cib cic cih cii h-i haa hab hac hah hai hba hbb hbc hbh hbi hca hcb hcc hch hci hha hhb hhc hhh hhi hia hib hic hih hii ia- iaa iab iac iah iai iba ibb ibc ibh ibi ica icb icc ich ici iha ihb ihc ihh ihi iia iib iic iih iii