-ic a-a a-b a-c a-i aaa aab aac aad aae aai aam ab- aba abb abc abd abe abi abm ac- aca acb acc acd ace aci acm ad- ada adb adc add ade adi adm aea aeb aec aed aee aei aem ai- aia aib aic aid aie aii aim ama amb amc amd ame ami amm baa bab bac bad bae bai bam bba bbb bbc bbd bbe bbi bbm bca bcb bcc bcd bce bci bcm bda bdb bdc bdd bde bdi bdm be- bea beb bec bed bee bei bem bi- bia bib bic bid bie bii bim bma bmb bmc bmd bme bmi bmm c-- caa cab cac cad cae cai cam cba cbb cbc cbd cbe cbi cbm cca ccb ccc ccd cce cci ccm cda cdb cdc cdd cde cdi cdm ce- cea ceb cec ced cee cei cem ci- cia cib cic cid cie cii cim cma cmb cmc cmd cme cmi cmm daa dab dac dad dae dai dam dba dbb dbc dbd dbe dbi dbm dca dcb dcc dcd dce dci dcm dda ddb ddc ddd dde ddi ddm de- dea deb dec ded dee dei dem di- dia dib dic did die dii dim dma dmb dmc dmd dme dmi dmm eaa eab eac ead eae eai eam eba ebb ebc ebd ebe ebi ebm ec- eca ecb ecc ecd ece eci ecm ed- eda edb edc edd ede edi edm eea eeb eec eed eee eem eia eib eic eid eie eii eim em- ema emb emc emd eme emi emm i-d ia- iaa iab iac iad iae iai iam iba ibb ibc ibd ibe ibi ibm ica icb icc icd ice ici icm ida idb idc idd ide idi idm ie- iea iec ied iee iei iem iia iib iic iid iie iii iim im- ima imb imc imd ime imi imm maa mab mac mad mae mai mam mba mbb mbc mbd mbe mbi mbm mc- mca mcb mcc mcd mce mci mcm mda mdb mdc mdd mde mdi mdm mea meb mec med mee mei mem mi- mia mib mic mid mie mii mim mma mmb mmc mmd mme mmi mmm