a-a a-c a-t aaa aac aae aaf aak aan aap aat ac- aca acc ace acf ack acn acp act aea aec aee aef aek aen aep aet af- afa afc afe aff afk afn afp aft aka akc ake akk akn akp an- ana anc ane anf ank ann anp ant ap- apa apc ape apf apk apn app apt at- ata atc ate atf atn atp att c-- caa cac cae caf cak can cap cat cca ccc cce ccf cck ccn ccp cct ce- cea cec cee cef cek cen cep cet cfa cfc cfe cff cfk cfn cfp cft cka ckc ckt cn- cna cnc cne cnf cnn cnp cnt cpa cpc cpe cpf cpk cpn cpp cpt cta ctc cte ctf ctk ctn ctp ctt eaa eac eae eaf eak ean eap eat ec- eca ecc ece ecf eck ecn ect eea eec eee eef eek een eep eet ef- efa efc efe eff efp eft eka ekc eke ekf ekp ekt en- ena enc ene enf enk enn enp ent ep- epa epc epe epf epn epp ept eta etc ete etf etk etn etp ett faa fac fae faf fak fan fap fat fca fcc fce fcf fck fcn fcp fct fea fec fee fef fek fen fep fet ffa ffc ffe fff ffk ffn ffp fft fka fkc fkf fkk fkp fkt fna fnc fne fnf fnk fnn fnp fnt fpa fpc fpe fpk fpn fpp fpt fta ftc fte ftf ftk ftn ftp ftt k-t ka- kaa kac kae kaf kak kan kap kat kca kcc kce kck kcn kcp kct ke- kea kec kee kef kek ken kep ket kfa kfc kff kkc kke kkk kkn kkp kkt kn- kna knc kne knf knk knn knp knt kpa kpc kpe kpf kpk kpn kpp kpt kta ktc kte ktf ktk ktn ktp ktt naa nac nae naf nak nan nap nat nca ncc nce ncf nck ncn ncp nct ne- nea nec nee nef nek nen nep net nfa nfc nfe nff nfk nfn nfp nft nka nkc nke nkf nkk nkn nkp nkt nna nnc nne nnf nnk nnn nnp nnt npa npc npe npf npn npp npt nta ntc nte ntf ntk ntn ntp ntt p-p paa pac pae paf pak pan pap pat pca pcc pce pcf pck pcn pcp pct pea pec pee pef pek pen pep pet pfa pfc pfe pff pfk pfn pfp pft pka pkc pke pkf pkn pkp pkt pn- pna pnc pne pnf pnk pnn pnp pnt ppa ppc ppe ppf ppk ppn ppp ppt pt- pta ptc pte ptf ptk ptn ptp ptt taa tac tae taf tak tan tap tat tca tcc tce tcf tck tcn tcp tct te- tea tec tee tef tek ten tep tet tfa tfc tfe tff tfk tfn tfp tft tka tkc tke tkk tkp tkt tna tnc tne tnf tnk tnn tnp tnt tpa tpc tpe tpf tpk tpn tpp tpt tta ttc tte ttf ttk ttn ttp ttt