a-a a-c a-t aaa aac aae aaf aan aao aap aat ac- aca acc ace acf acn aco acp act aea aec aee aef aen aeo aep aet af- afa afc afe aff afn afo afp aft an- ana anc ane anf ann ano anp ant aoa aoc aoe aof aon aoo aop aot ap- apa apc ape apf apn apo app apt at- ata atc ate atf atn ato atp att c-- caa cac cae caf can cao cap cat cca ccc cce ccf ccn cco ccp cct ce- cea cec cee cef cen ceo cep cet cfa cfc cfe cff cfn cfo cfp cft cn- cna cnc cne cnf cnn cno cnp cnt co- coa coc coe cof con coo cop cot cpa cpc cpe cpf cpn cpo cpp cpt cta ctc cte ctf ctn cto ctp ctt eaa eac eae eaf ean eao eap eat ec- eca ecc ece ecf ecn eco ect eea eec eee eef een eeo eep eet ef- efa efc efe eff efo efp eft en- ena enc ene enf enn eno enp ent eo- eoa eoc eoe eof eon eoo eop eot ep- epa epc epe epf epn epo epp ept eta etc ete etf etn eto etp ett faa fac fae faf fan fao fap fat fca fcc fce fcf fcn fco fcp fct fea fec fee fef fen feo fep fet ffa ffc ffe fff ffn ffo ffp fft fna fnc fne fnf fnn fnp fnt foa foc foe fof fon foo fop fot fpa fpc fpe fpn fpo fpp fpt fta ftc fte ftf ftn fto ftp ftt naa nac nae naf nan nao nap nat nca ncc nce ncf ncn nco ncp nct ne- nea nec nee nef nen neo nep net nfa nfc nfe nff nfn nfo nfp nft nna nnc nne nnf nnn nno nnp nnt no- noa noc noe nof non noo nop not npa npc npe npf npn npo npp npt nta ntc nte ntf ntn nto ntp ntt oaa oac oae oaf oan oao oap oat oc- oca occ ocf ocn oco ocp oct oea oec oee oef oen oeo oep oet of- ofa ofc ofe off ofn ofo ofp oft on- ona onc one onf onn ono onp ont oo- ooa ooc oof oon ooo oop oot op- opa opc ope opf opn opo opp opt ot- ota otc ote otf otn oto otp ott p-p paa pac pae paf pan pao pap pat pca pcc pce pcf pcn pco pcp pct pea pec pee pef pen peo pep pet pfa pfc pfe pff pfn pfo pfp pft pn- pna pnc pne pnf pnn pno pnp pnt poa poc poe pof pon poo pop pot ppa ppc ppe ppf ppn ppo ppp ppt pt- pta ptc pte ptf ptn pto ptp ptt taa tac tae taf tan tao tap tat tca tcc tce tcf tcn tco tcp tct te- tea tec tee tef ten teo tep tet tfa tfc tfe tff tfn tfo tfp tft tna tnc tne tnf tnn tno tnp tnt to- toa toc toe tof ton too top tot tpa tpc tpe tpf tpn tpo tpp tpt tta ttc tte ttf ttn tto ttp ttt