-ic a-a a-b a-c a-i aaa aab aac aae aah aai aam ab- aba abb abc abe abh abi abm ac- aca acb acc ace ach aci acm aea aeb aec aee aeh aei aem aha ahb ahc ahe ahh ahi ahm ai- aia aib aic aie aih aii aim ama amb amc ame amh ami amm baa bab bac bae bah bai bam bba bbb bbc bbe bbh bbi bbm bca bcb bcc bce bch bci bcm be- bea beb bec bee beh bei bem bha bhb bhc bhe bhh bhi bhm bi- bia bib bic bie bih bii bim bma bmb bmc bme bmh bmi bmm c-- caa cab cac cae cah cai cam cba cbb cbc cbe cbh cbi cbm cca ccb ccc cce cch cci ccm ce- cea ceb cec cee ceh cei cem ch- cha chb chc che chh chi chm ci- cia cib cic cie cih cii cim cma cmb cmc cme cmh cmi cmm eaa eab eac eae eah eai eam eba ebb ebc ebe ebh ebi ebm ec- eca ecb ecc ece ech eci ecm eea eeb eec eee eem eha ehb ehc ehe ehh ehi ehm eia eib eic eie eii eim em- ema emb emc eme emh emi emm h-i haa hab hac hae hah hai ham hba hbb hbc hbe hbh hbi hbm hca hcb hcc hce hch hci hcm he- hea heb hec hee heh hei hem hha hhb hhc hhe hhh hhi hhm hia hib hic hie hih hii him hma hmb hmc hme hmh hmi hmm ia- iaa iab iac iae iah iai iam iba ibb ibc ibe ibh ibi ibm ica icb icc ice ich ici icm ie- iea iec iee iei iem iha ihb ihc ihe ihh ihi ihm iia iib iic iie iih iii iim im- ima imb imc ime imh imi imm maa mab mac mae mah mai mam mba mbb mbc mbe mbh mbi mbm mc- mca mcb mcc mce mch mci mcm mea meb mec mee meh mei mem mha mhc mhh mhi mhm mi- mia mib mic mie mih mii mim mma mmb mmc mme mmh mmi mmm