a-a a-c aaa aac aae aaf aam aap aas ac- aca acc ace acf acm acp acs aea aec aee aef aem aep aes af- afa afc afe aff afm afp afs ama amc ame amf amm amp ams ap- apa apc ape apf apm app aps as- asa asc ase asf asm asp ass c-- caa cac cae caf cam cap cas cca ccc cce ccf ccm ccp ccs ce- cea cec cee cef cem cep ces cfa cfc cfe cff cfm cfp cfs cma cmc cme cmf cmm cmp cms cpa cpc cpe cpf cpm cpp cps csa csc cse csf csm csp css eaa eac eae eaf eam eap eas ec- eca ecc ece ecf ecm ecs eea eec eee eef eem eep ees ef- efa efc efe eff efm efp efs em- ema emc eme emf emm emp ems ep- epa epc epe epf epm epp eps es- esa esc ese esf esm esp ess faa fac fae faf fam fap fas fca fcc fce fcf fcm fcp fcs fea fec fee fef fem fep fes ffa ffc ffe fff ffm ffp ffs fma fmc fme fmf fmm fmp fms fpa fpc fpe fpm fpp fps fsa fsc fse fsf fsm fsp fss m-f maa mac mae maf mam map mas mc- mca mcc mce mcf mcm mcp mcs mea mec mee mef mem mep mes mfa mfc mfe mff mfm mfp mfs mma mmc mme mmf mmm mmp mms mpa mpc mpe mpf mpm mpp mps msa msc mse msf msm msp mss p-p paa pac pae paf pam pap pas pca pcc pce pcf pcm pcp pcs pea pec pee pef pem pep pes pfa pfc pfe pff pfm pfp pfs pma pmc pme pmf pmm pmp pms ppa ppc ppe ppf ppm ppp pps ps- psa psc pse psf psm psp pss saa sac sae saf sam sap sas sca scc sce scf scm scp scs se- sea sec see sef sem sep ses sfa sfc sfe sff sfm sfp sfs sma smc sme smf smm smp sms spa spc spe spf spm spp sps ss- ssa ssc sse ssf ssm ssp sss