a-a a-c a-t aaa aac aad aae aao aap aat ac- aca acc acd ace aco acp act ad- ada adc add ade ado adp adt aea aec aed aee aeo aep aet aoa aoc aod aoe aoo aop aot ap- apa apc apd ape apo app apt at- ata atc atd ate ato atp att c-- caa cac cad cae cao cap cat cca ccc ccd cce cco ccp cct cda cdc cdd cde cdo cdp cdt ce- cea cec ced cee ceo cep cet co- coa coc cod coe coo cop cot cpa cpc cpd cpe cpo cpp cpt cta ctc ctd cte cto ctp ctt daa dac dad dae dao dap dat dca dcc dcd dce dco dcp dct dda ddc ddd dde ddo ddp ddt de- dea dec ded dee deo dep det doa doc dod doe doo dop dot dpa dpc dpd dpe dpo dpp dpt dta dtc dtd dte dto dtp dtt eaa eac ead eae eao eap eat ec- eca ecc ecd ece eco ect ed- eda edc edd ede edo edp edt eea eec eed eee eeo eep eet eo- eoa eoc eod eoe eoo eop eot ep- epa epc epd epe epo epp ept eta etc etd ete eto etp ett oaa oac oad oae oao oap oat oc- oca occ ocd oco ocp oct oda odc odd ode odo odp odt oea oec oed oee oeo oep oet oo- ooa ooc ood ooo oop oot op- opa opc opd ope opo opp opt ot- ota otc otd ote oto otp ott p-p paa pac pad pae pao pap pat pca pcc pcd pce pco pcp pct pda pdc pdd pde pdo pdp pdt pea pec ped pee peo pep pet poa poc pod poe poo pop pot ppa ppc ppd ppe ppo ppp ppt pt- pta ptc ptd pte pto ptp ptt taa tac tad tae tao tap tat tca tcc tcd tce tco tcp tct tda tdc tdd tde tdo tdp tdt te- tea tec ted tee teo tep tet to- toa toc tod toe too top tot tpa tpc tpd tpe tpo tpp tpt tta ttc ttd tte tto ttp ttt