a-a a-c a-t aaa aac aad aae aap aat ac- aca acc acd ace acp act ad- ada adc add ade adp adt aea aec aed aee aep aet ap- apa apc apd ape app apt at- ata atc atd ate atp att c-- caa cac cad cae cap cat cca ccc ccd cce ccp cct cda cdc cdd cde cdp cdt ce- cea cec ced cee cep cet cpa cpc cpd cpe cpp cpt cta ctc ctd cte ctp ctt daa dac dad dae dap dat dca dcc dcd dce dcp dct dda ddc ddd dde ddp ddt de- dea dec ded dee dep det dpa dpc dpd dpe dpp dpt dta dtc dtd dte dtp dtt eaa eac ead eae eap eat ec- eca ecc ecd ece ect ed- eda edc edd ede edp edt eea eec eed eee eep eet ep- epa epc epd epe epp ept eta etc etd ete etp ett p-p paa pac pad pae pap pat pca pcc pcd pce pcp pct pda pdc pdd pde pdp pdt pea pec ped pee pep pet ppa ppc ppd ppe ppp ppt pt- pta ptc ptd pte ptp ptt taa tac tad tae tap tat tca tcc tcd tce tcp tct tda tdc tdd tde tdp tdt te- tea tec ted tee tep tet tpa tpc tpd tpe tpp tpt tta ttc ttd tte ttp ttt