a-a a-c a-t aaa aac aad aae aan aap aat ac- aca acc acd ace acn acp act ad- ada adc add ade adn adp adt aea aec aed aee aen aep aet an- ana anc and ane ann anp ant ap- apa apc apd ape apn app apt at- ata atc atd ate atn atp att c-- caa cac cad cae can cap cat cca ccc ccd cce ccn ccp cct cda cdc cdd cde cdn cdp cdt ce- cea cec ced cee cen cep cet cn- cna cnc cnd cne cnn cnp cnt cpa cpc cpd cpe cpn cpp cpt cta ctc ctd cte ctn ctp ctt daa dac dad dae dan dap dat dca dcc dcd dce dcn dcp dct dda ddc ddd dde ddn ddp ddt de- dea dec ded dee den dep det dna dnc dnd dne dnn dnp dnt dpa dpc dpd dpe dpn dpp dpt dta dtc dtd dte dtn dtp dtt eaa eac ead eae ean eap eat ec- eca ecc ecd ece ecn ect ed- eda edc edd ede edn edp edt eea eec eed eee een eep eet en- ena enc end ene enn enp ent ep- epa epc epd epe epn epp ept eta etc etd ete etn etp ett naa nac nad nae nan nap nat nca ncc ncd nce ncn ncp nct nda ndc ndd nde ndn ndp ndt ne- nea nec ned nee nen nep net nna nnc nne nnn nnp nnt npa npc npd npe npn npp npt nta ntc ntd nte ntn ntp ntt p-p paa pac pad pae pan pap pat pca pcc pcd pce pcn pcp pct pda pdc pdd pde pdn pdp pdt pea pec ped pee pen pep pet pn- pna pnc pnd pne pnn pnp pnt ppa ppc ppd ppe ppn ppp ppt pt- pta ptc ptd pte ptn ptp ptt taa tac tad tae tan tap tat tca tcc tcd tce tcn tcp tct tda tdc tdd tde tdn tdp tdt te- tea tec ted tee ten tep tet tna tnc tnd tne tnn tnp tnt tpa tpc tpd tpe tpn tpp tpt tta ttc ttd tte ttn ttp ttt