a-a a-c a-t aaa aac aad aae aaf aan aao aap aat ac- aca acc acd ace acf acn aco acp act ad- ada adc add ade adf adn ado adp adt aea aec aed aee aef aen aeo aep aet af- afa afc afd afe aff afn afo afp aft an- ana anc and ane anf ann ano anp ant aoa aoc aod aoe aof aon aoo aop aot ap- apa apc apd ape apf apn apo app apt at- ata atc atd ate atf atn ato atp att c-- caa cac cad cae caf can cao cap cat cca ccc ccd cce ccf ccn cco ccp cct cda cdc cdd cde cdf cdn cdo cdp cdt ce- cea cec ced cee cef cen ceo cep cet cfa cfc cfd cfe cff cfn cfo cfp cft cn- cna cnc cnd cne cnf cnn cno cnp cnt co- coa coc cod coe cof con coo cop cot cpa cpc cpd cpe cpf cpn cpo cpp cpt cta ctc ctd cte ctf ctn cto ctp ctt daa dac dad dae daf dan dao dap dat dca dcc dcd dce dcf dcn dco dcp dct dda ddc ddd dde ddf ddn ddo ddp ddt de- dea dec ded dee def den deo dep det dfa dfc dfd dfe dff dfn dfo dfp dft dna dnc dnd dne dnf dnn dno dnp dnt doa doc dod doe dof don doo dop dot dpa dpc dpd dpe dpf dpn dpo dpp dpt dta dtc dtd dte dtf dtn dto dtp dtt eaa eac ead eae eaf ean eao eap eat ec- eca ecc ecd ece ecf ecn eco ect ed- eda edc edd ede edf edn edo edp edt eea eec eed eee eef een eeo eep eet ef- efa efc efd efe eff efo efp eft en- ena enc end ene enf enn eno enp ent eo- eoa eoc eod eoe eof eon eoo eop eot ep- epa epc epd epe epf epn epo epp ept eta etc etd ete etf etn eto etp ett faa fac fad fae faf fan fao fap fat fca fcc fcd fce fcf fcn fco fcp fct fda fdc fdd fde fdf fdn fdo fdp fdt fea fec fed fee fef fen feo fep fet ffa ffc ffd ffe fff ffn ffo ffp fft fna fnc fnd fne fnf fnn fnp fnt foa foc foe fof fon foo fop fot fpa fpc fpd fpe fpn fpo fpp fpt fta ftc ftd fte ftf ftn fto ftp ftt naa nac nad nae naf nan nao nap nat nca ncc ncd nce ncf ncn nco ncp nct nda ndc ndd nde ndf ndn ndo ndp ndt ne- nea nec ned nee nef nen neo nep net nfa nfc nfd nfe nff nfn nfo nfp nft nna nnc nne nnf nnn nno nnp nnt no- noa noc nod noe nof non noo nop not npa npc npd npe npf npn npo npp npt nta ntc ntd nte ntf ntn nto ntp ntt oaa oac oad oae oaf oan oao oap oat oc- oca occ ocd ocf ocn oco ocp oct oda odc odd ode odf odn odo odp odt oea oec oed oee oef oen oeo oep oet of- ofa ofc ofd ofe off ofn ofo ofp oft on- ona onc ond one onf onn ono onp ont oo- ooa ooc ood oof oon ooo oop oot op- opa opc opd ope opf opn opo opp opt ot- ota otc otd ote otf otn oto otp ott p-p paa pac pad pae paf pan pao pap pat pca pcc pcd pce pcf pcn pco pcp pct pda pdc pdd pde pdf pdn pdo pdp pdt pea pec ped pee pef pen peo pep pet pfa pfc pfd pfe pff pfn pfo pfp pft pn- pna pnc pnd pne pnf pnn pno pnp pnt poa poc pod poe pof pon poo pop pot ppa ppc ppd ppe ppf ppn ppo ppp ppt pt- pta ptc ptd pte ptf ptn pto ptp ptt taa tac tad tae taf tan tao tap tat tca tcc tcd tce tcf tcn tco tcp tct tda tdc tdd tde tdf tdn tdo tdp tdt te- tea tec ted tee tef ten teo tep tet tfa tfc tfd tfe tff tfn tfo tfp tft tna tnc tnd tne tnf tnn tno tnp tnt to- toa toc tod toe tof ton too top tot tpa tpc tpd tpe tpf tpn tpo tpp tpt tta ttc ttd tte ttf ttn tto ttp ttt