-ic a-a a-b a-c a-i aaa aab aac aad aae aai aam aas ab- aba abb abc abd abe abi abm abs ac- aca acb acc acd ace aci acm acs ad- ada adb adc add ade adi adm ads aea aeb aec aed aee aei aem aes ai- aia aib aic aid aie aii aim ais ama amb amc amd ame ami amm ams as- asa asb asc asd ase asi asm ass baa bab bac bad bae bai bam bas bba bbb bbc bbd bbe bbi bbm bbs bca bcb bcc bcd bce bci bcm bcs bda bdb bdc bdd bde bdi bdm bds be- bea beb bec bed bee bei bem bes bi- bia bib bic bid bie bii bim bis bma bmb bmc bmd bme bmi bmm bms bsa bsb bsc bsd bse bsi bsm bss c-- caa cab cac cad cae cai cam cas cba cbb cbc cbd cbe cbi cbm cbs cca ccb ccc ccd cce cci ccm ccs cda cdb cdc cdd cde cdi cdm cds ce- cea ceb cec ced cee cei cem ces ci- cia cib cic cid cie cii cim cis cma cmb cmc cmd cme cmi cmm cms csa csb csc csd cse csi csm css daa dab dac dad dae dai dam das dba dbb dbc dbd dbe dbi dbm dbs dca dcb dcc dcd dce dci dcm dcs dda ddb ddc ddd dde ddi ddm dds de- dea deb dec ded dee dei dem des di- dia dib dic did die dii dim dis dma dmb dmc dmd dme dmi dmm dms dsa dsb dsc dsd dse dsi dsm dss eaa eab eac ead eae eai eam eas eba ebb ebc ebd ebe ebi ebm ebs ec- eca ecb ecc ecd ece eci ecm ecs ed- eda edb edc edd ede edi edm eds eea eeb eec eed eee eem ees eia eib eic eid eie eii eim eis em- ema emb emc emd eme emi emm ems es- esa esb esc esd ese esi esm ess i-d ia- iaa iab iac iad iae iai iam ias iba ibb ibc ibd ibe ibi ibm ibs ica icb icc icd ice ici icm ics ida idb idc idd ide idi idm ids ie- iea iec ied iee iei iem ies iia iib iic iid iie iii iim iis im- ima imb imc imd ime imi imm ims is- isa isb isc isd ise isi ism iss maa mab mac mad mae mai mam mas mba mbb mbc mbd mbe mbi mbm mbs mc- mca mcb mcc mcd mce mci mcm mcs mda mdb mdc mdd mde mdi mdm mds mea meb mec med mee mei mem mes mi- mia mib mic mid mie mii mim mis mma mmb mmc mmd mme mmi mmm mms msa msb msc msd mse msi msm mss saa sab sac sad sae sai sam sas sba sbb sbc sbd sbe sbi sbm sbs sca scb scc scd sce sci scm scs sda sdb sdc sdd sde sdi sdm sds se- sea seb sec sed see sei sem ses sia sib sic sid sie sii sim sis sma smb smc smd sme smi smm sms ss- ssa ssb ssc ssd sse ssi ssm sss