a-a a-c aaa aac aae aaf aah aao aap aas ac- aca acc ace acf ach aco acp acs aea aec aee aef aeh aeo aep aes af- afa afc afe aff afh afo afp afs aha ahc ahe ahf ahh aho ahp ahs aoa aoc aoe aof aoh aoo aop aos ap- apa apc ape apf aph apo app aps as- asa asc ase asf ash aso asp ass c-- caa cac cae caf cah cao cap cas cca ccc cce ccf cch cco ccp ccs ce- cea cec cee cef ceh ceo cep ces cfa cfc cfe cff cfh cfo cfp cfs ch- cha chc che chf chh cho chp chs co- coa coc coe cof coh coo cop cos cpa cpc cpe cpf cph cpo cpp cps csa csc cse csf csh cso csp css eaa eac eae eaf eah eao eap eas ec- eca ecc ece ecf ech eco ecs eea eec eee eef eeo eep ees ef- efa efc efe eff efh efo efp efs eha ehc ehe ehf ehh eho ehp ehs eo- eoa eoc eoe eof eoh eoo eop eos ep- epa epc epe epf eph epo epp eps es- esa esc ese esf esh eso esp ess faa fac fae faf fah fao fap fas fca fcc fce fcf fco fcp fcs fea fec fee fef feh feo fep fes ffa ffc ffe fff ffh ffo ffp ffs fha fhc fhe fhf fhh fho fhp fhs foa foc foe fof foh foo fop fos fpa fpc fpe fph fpo fpp fps fsa fsc fse fsf fsh fso fsp fss haa hac hae haf hah hao hap has hca hcc hce hcf hch hco hcp hcs he- hea hec hee hef heh heo hep hes hfa hfc hfe hff hfh hfo hfp hfs hha hhc hhe hhf hhh hho hhp hhs hoa hoc hoe hof hoh hoo hop hos hpa hpc hpe hpf hph hpo hpp hps hsa hsc hse hsf hsh hsp hss oaa oac oae oaf oah oao oap oas oc- oca occ ocf och oco ocp ocs oea oec oee oef oeh oeo oep oes of- ofa ofc ofe off ofo ofp ofs oha ohc ohe ohf ohh oho ohp ohs oo- ooa ooc oof ooh ooo oop oos op- opa opc ope opf oph opo opp ops os- osa osc ose osf osh oso osp oss p-p paa pac pae paf pah pao pap pas pca pcc pce pcf pch pco pcp pcs pea pec pee pef peh peo pep pes pfa pfc pfe pff pfo pfp pfs pha phc phe phf pho php phs poa poc poe pof poh poo pop pos ppa ppc ppe ppf pph ppo ppp pps ps- psa psc pse psf psh pso psp pss saa sac sae saf sah sao sap sas sca scc sce scf sch sco scp scs se- sea sec see sef seh seo sep ses sfa sfc sfe sff sfh sfo sfp sfs sh- sha shc she shf shh sho shp shs soa soc soe sof soh soo sop sos spa spc spe spf sph spo spp sps ss- ssa ssc sse ssf ssh sso ssp sss