a-a a-c aaa aac aad aae aaf aan aao aap ac- aca acc acd ace acf acn aco acp ad- ada adc add ade adf adn ado adp aea aec aed aee aef aen aeo aep af- afa afc afd afe aff afn afo afp an- ana anc and ane anf ann ano anp aoa aoc aod aoe aof aon aoo aop ap- apa apc apd ape apf apn apo app c-- caa cac cad cae caf can cao cap cca ccc ccd cce ccf ccn cco ccp cda cdc cdd cde cdf cdn cdo cdp ce- cea cec ced cee cef cen ceo cep cfa cfc cfd cfe cff cfn cfo cfp cn- cna cnc cnd cne cnf cnn cno cnp co- coa coc cod coe cof con coo cop cpa cpc cpd cpe cpf cpn cpo cpp daa dac dad dae daf dan dao dap dca dcc dcd dce dcf dcn dco dcp dda ddc ddd dde ddf ddn ddo ddp de- dea dec ded dee def den deo dep dfa dfc dfd dfe dff dfn dfo dfp dna dnc dnd dne dnf dnn dno dnp doa doc dod doe dof don doo dop dpa dpc dpd dpe dpf dpn dpo dpp eaa eac ead eae eaf ean eao eap ec- eca ecc ecd ece ecf ecn eco ed- eda edc edd ede edf edn edo edp eea eec eed eee eef een eeo eep ef- efa efc efd efe eff efo efp en- ena enc end ene enf enn eno enp eo- eoa eoc eod eoe eof eon eoo eop ep- epa epc epd epe epf epn epo epp faa fac fad fae faf fan fao fap fca fcc fcd fce fcf fcn fco fcp fda fdc fdd fde fdf fdn fdo fdp fea fec fed fee fef fen feo fep ffa ffc ffd ffe fff ffn ffo ffp fna fnc fnd fne fnf fnn fnp foa foc foe fof fon foo fop fpa fpc fpd fpe fpn fpo fpp naa nac nad nae naf nan nao nap nca ncc ncd nce ncf ncn nco ncp nda ndc ndd nde ndf ndn ndo ndp ne- nea nec ned nee nef nen neo nep nfa nfc nfd nfe nff nfn nfo nfp nna nnc nne nnf nnn nno nnp no- noa noc nod noe nof non noo nop npa npc npd npe npf npn npo npp oaa oac oad oae oaf oan oao oap oc- oca occ ocd ocf ocn oco ocp oda odc odd ode odf odn odo odp oea oec oed oee oef oen oeo oep of- ofa ofc ofd ofe off ofn ofo ofp on- ona onc ond one onf onn ono onp oo- ooa ooc ood oof oon ooo oop op- opa opc opd ope opf opn opo opp p-p paa pac pad pae paf pan pao pap pca pcc pcd pce pcf pcn pco pcp pda pdc pdd pde pdf pdn pdo pdp pea pec ped pee pef pen peo pep pfa pfc pfd pfe pff pfn pfo pfp pn- pna pnc pnd pne pnf pnn pno pnp poa poc pod poe pof pon poo pop ppa ppc ppd ppe ppf ppn ppo ppp