a-a a-b a-c a-t aaa aab aac aad aae aam aat aau ab- aba abb abc abd abe abm abt abu ac- aca acb acc acd ace acm act acu ad- ada adb adc add ade adm adt adu aea aeb aec aed aee aem aet aeu ama amb amc amd ame amm amt amu at- ata atb atc atd ate atm att atu au- aua aub auc aud aue aum aut b-u baa bab bac bad bae bam bat bau bba bbb bbc bbd bbe bbm bbt bbu bca bcb bcc bcd bce bcm bct bcu bda bdb bdc bdd bde bdm bdt bdu be- bea beb bec bed bee bem bet beu bma bmb bmc bmd bme bmm bmt bmu bta btb btc btd bte btm btt btu bua bub buc bud bue bum but buu c-- caa cab cac cad cae cam cat cau cba cbb cbc cbd cbe cbm cbt cbu cca ccb ccc ccd cce ccm cct ccu cda cdb cdc cdd cde cdm cdt cdu ce- cea ceb cec ced cee cem cet ceu cma cmb cmc cmd cme cmm cmt cmu cta ctb ctc ctd cte ctm ctt ctu cua cub cuc cud cue cum cut cuu daa dab dac dad dae dam dat dau dba dbb dbc dbd dbe dbm dbt dbu dca dcb dcc dcd dce dcm dct dcu dda ddb ddc ddd dde ddm ddt ddu de- dea deb dec ded dee dem det deu dma dmb dmc dmd dme dmm dmt dmu dta dtb dtc dtd dte dtm dtt dtu dua dub duc dud due dum dut eaa eab eac ead eae eam eat eau eba ebb ebc ebd ebe ebm ebt ebu ec- eca ecb ecc ecd ece ecm ect ecu ed- eda edb edc edd ede edm edt edu eea eeb eec eed eee eem eet em- ema emb emc emd eme emm emt emu eta etb etc etd ete etm ett etu eu- eua eub euc eud eue eut maa mab mac mad mae mam mat mau mba mbb mbc mbd mbe mbm mbt mbu mc- mca mcb mcc mcd mce mcm mct mcu mda mdb mdc mdd mde mdm mdt mdu mea meb mec med mee mem met meu mma mmb mmc mmd mme mmm mmt mmu mta mtb mtc mtd mte mtm mtt mtu mua mub muc mud mue mum mut muu taa tab tac tad tae tam tat tau tba tbb tbc tbd tbe tbm tbt tbu tca tcb tcc tcd tce tcm tct tcu tda tdb tdc tdd tde tdm tdt tdu te- tea teb tec ted tee tem tet teu tma tmb tmc tmd tme tmm tmt tmu tta ttb ttc ttd tte ttm ttt ttu tua tub tuc tud tue tum tut tuu ua- uaa uab uac uad uae uam uat uau uba ubb ubc ube ubt ubu uca ucb ucc ucd uce ucm uct ucu uda udb udc udd ude udm udt udu uea ueb uec ued uee uem uet um- uma umb umc umd ume umm umt umu uta utb utc utd ute utm utt utu uua uuc uue uum uut uuu