a-a a-b a-c aaa aab aac aad aae aah aam ab- aba abb abc abd abe abh abm ac- aca acb acc acd ace ach acm ad- ada adb adc add ade adh adm aea aeb aec aed aee aeh aem aha ahb ahc ahd ahe ahh ahm ama amb amc amd ame amh amm baa bab bac bad bae bah bam bba bbb bbc bbd bbe bbh bbm bca bcb bcc bcd bce bch bcm bda bdb bdc bdd bde bdh bdm be- bea beb bec bed bee beh bem bha bhb bhc bhd bhe bhh bhm bma bmb bmc bmd bme bmh bmm c-- caa cab cac cad cae cah cam cba cbb cbc cbd cbe cbh cbm cca ccb ccc ccd cce cch ccm cda cdb cdc cdd cde cdh cdm ce- cea ceb cec ced cee ceh cem ch- cha chb chc chd che chh chm cma cmb cmc cmd cme cmh cmm daa dab dac dad dae dah dam dba dbb dbc dbd dbe dbh dbm dca dcb dcc dcd dce dcm dda ddb ddc ddd dde ddh ddm de- dea deb dec ded dee deh dem dh- dha dhb dhc dhd dhe dhh dhm dma dmb dmc dmd dme dmh dmm eaa eab eac ead eae eah eam eba ebb ebc ebd ebe ebh ebm ec- eca ecb ecc ecd ece ech ecm ed- eda edb edc edd ede edh edm eea eeb eec eed eee eem eha ehb ehc ehd ehe ehh ehm em- ema emb emc emd eme emh emm haa hab hac had hae hah ham hba hbb hbc hbd hbe hbh hbm hca hcb hcc hcd hce hch hcm hda hdb hdc hdd hde hdh hdm he- hea heb hec hed hee heh hem hha hhb hhc hhd hhe hhh hhm hma hmb hmc hmd hme hmh hmm maa mab mac mad mae mah mam mba mbb mbc mbd mbe mbh mbm mc- mca mcb mcc mcd mce mch mcm mda mdb mdc mdd mde mdh mdm mea meb mec med mee meh mem mha mhc mhd mhh mhm mma mmb mmc mmd mme mmh mmm