-ic a-a a-b a-c a-i a-t aaa aab aac aad aae aai aam aat ab- aba abb abc abd abe abi abm abt ac- aca acb acc acd ace aci acm act ad- ada adb adc add ade adi adm adt aea aeb aec aed aee aei aem aet ai- aia aib aic aid aie aii aim ait ama amb amc amd ame ami amm amt at- ata atb atc atd ate ati atm att baa bab bac bad bae bai bam bat bba bbb bbc bbd bbe bbi bbm bbt bca bcb bcc bcd bce bci bcm bct bda bdb bdc bdd bde bdi bdm bdt be- bea beb bec bed bee bei bem bet bi- bia bib bic bid bie bii bim bit bma bmb bmc bmd bme bmi bmm bmt bta btb btc btd bte bti btm btt c-- caa cab cac cad cae cai cam cat cba cbb cbc cbd cbe cbi cbm cbt cca ccb ccc ccd cce cci ccm cct cda cdb cdc cdd cde cdi cdm cdt ce- cea ceb cec ced cee cei cem cet ci- cia cib cic cid cie cii cim cit cma cmb cmc cmd cme cmi cmm cmt cta ctb ctc ctd cte cti ctm ctt daa dab dac dad dae dai dam dat dba dbb dbc dbd dbe dbi dbm dbt dca dcb dcc dcd dce dci dcm dct dda ddb ddc ddd dde ddi ddm ddt de- dea deb dec ded dee dei dem det di- dia dib dic did die dii dim dit dma dmb dmc dmd dme dmi dmm dmt dta dtb dtc dtd dte dti dtm dtt eaa eab eac ead eae eai eam eat eba ebb ebc ebd ebe ebi ebm ebt ec- eca ecb ecc ecd ece eci ecm ect ed- eda edb edc edd ede edi edm edt eea eeb eec eed eee eem eet eia eib eic eid eie eii eim eit em- ema emb emc emd eme emi emm emt eta etb etc etd ete eti etm ett i-d ia- iaa iab iac iad iae iai iam iat iba ibb ibc ibd ibe ibi ibm ibt ica icb icc icd ice ici icm ict ida idb idc idd ide idi idm idt ie- iea iec ied iee iei iem iet iia iib iic iid iie iii iim iit im- ima imb imc imd ime imi imm imt ita itb itc itd ite iti itm itt maa mab mac mad mae mai mam mat mba mbb mbc mbd mbe mbi mbm mbt mc- mca mcb mcc mcd mce mci mcm mct mda mdb mdc mdd mde mdi mdm mdt mea meb mec med mee mei mem met mi- mia mib mic mid mie mii mim mit mma mmb mmc mmd mme mmi mmm mmt mta mtb mtc mtd mte mti mtm mtt taa tab tac tad tae tai tam tat tba tbb tbc tbd tbe tbi tbm tbt tca tcb tcc tcd tce tci tcm tct tda tdb tdc tdd tde tdi tdm tdt te- tea teb tec ted tee tei tem tet tia tib tic tid tie tii tim tit tma tmb tmc tmd tme tmi tmm tmt tta ttb ttc ttd tte tti ttm ttt