-er a-a aaa aae aaf aam aap aar aas aea aee aef aem aep aer aes af- afa afe aff afm afp afr afs ama ame amf amm amp amr ams ap- apa ape apf apm app apr aps ar- ara are arf arm arp arr ars as- asa ase asf asm asp asr ass eaa eae eaf eam eap ear eas eea eee eef eem eep eer ees ef- efa efe eff efm efp efr efs em- ema eme emf emm emp emr ems ep- epa epe epf epm epp epr eps era ere erf erm erp err ers es- esa ese esf esm esp esr ess faa fae faf fam fap far fas fea fee fef fem fep fer fes ffa ffe fff ffm ffp ffr ffs fma fme fmf fmm fmp fmr fms fpa fpe fpm fpp fpr fps fra fre frf frm frp frr frs fsa fse fsf fsm fsp fsr fss m-f m-r maa mae maf mam map mar mas mea mee mef mem mep mer mes mfa mfe mff mfm mfp mfr mfs mma mme mmf mmm mmp mmr mms mpa mpe mpf mpm mpp mpr mps mra mre mrf mrm mrp mrr mrs msa mse msf msm msp msr mss p-p paa pae paf pam pap par pas pea pee pef pem pep per pes pfa pfe pff pfm pfp pfr pfs pma pme pmf pmm pmp pmr pms ppa ppe ppf ppm ppp ppr pps pra pre prf prm prp prr prs ps- psa pse psf psm psp psr pss ra- raa rae raf ram rap rar ras re- rea ree ref rem rep rer res rfa rfe rff rfm rfp rfr rfs rma rme rmf rmm rmp rmr rms rpa rpe rpf rpm rpp rpr rps rra rrf rrm rrp rrr rrs rsa rse rsf rsm rsp rsr rss saa sae saf sam sap sar sas se- sea see sef sem sep ser ses sfa sfe sff sfm sfp sfr sfs sma sme smf smm smp smr sms spa spe spf spm spp spr sps sr- sra sre srf srm srp srr srs ss- ssa sse ssf ssm ssp ssr sss