-ic a-a a-b a-c a-i aaa aab aac aah aai aam ab- aba abb abc abh abi abm ac- aca acb acc ach aci acm aha ahb ahc ahh ahi ahm ai- aia aib aic aih aii aim ama amb amc amh ami amm baa bab bac bah bai bam bba bbb bbc bbh bbi bbm bca bcb bcc bch bci bcm bha bhb bhc bhh bhi bhm bi- bia bib bic bih bii bim bma bmb bmc bmh bmi bmm c-- caa cab cac cah cai cam cba cbb cbc cbh cbi cbm cca ccb ccc cch cci ccm ch- cha chb chc chh chi chm ci- cia cib cic cih cii cim cma cmb cmc cmh cmi cmm h-i haa hab hac hah hai ham hba hbb hbc hbh hbi hbm hca hcb hcc hch hci hcm hha hhb hhc hhh hhi hhm hia hib hic hih hii him hma hmb hmc hmh hmi hmm ia- iaa iab iac iah iai iam iba ibb ibc ibh ibi ibm ica icb icc ich ici icm iha ihb ihc ihh ihi ihm iia iib iic iih iii iim im- ima imb imc imh imi imm maa mab mac mah mai mam mba mbb mbc mbh mbi mbm mc- mca mcb mcc mch mci mcm mha mhc mhh mhi mhm mi- mia mib mic mih mii mim mma mmb mmc mmh mmi mmm