-ic a-a a-c a-i aaa aac aae aaf aag aai aap aas ac- aca acc ace acf acg aci acp acs aea aec aee aef aeg aei aep aes af- afa afc afe aff afg afi afp afs ag- aga agc age agf agg agi agp ags ai- aia aic aie aif aig aii aip ais ap- apa apc ape apf apg api app aps as- asa asc ase asf asg asi asp ass c-- caa cac cae caf cag cai cap cas cca ccc cce ccf ccg cci ccp ccs ce- cea cec cee cef ceg cei cep ces cfa cfc cfe cff cfg cfi cfp cfs cga cgc cge cgg cgi cgp cgs ci- cia cic cie cif cig cii cip cis cpa cpc cpe cpf cpg cpi cpp cps csa csc cse csf csg csi csp css eaa eac eae eaf eag eai eap eas ec- eca ecc ece ecf ecg eci ecs eea eec eee eef eeg eep ees ef- efa efc efe eff efg efi efp efs ega egc ege egf egg egi egp egs eia eic eie eif eig eii eip eis ep- epa epc epe epf epg epi epp eps es- esa esc ese esf esg esi esp ess faa fac fae faf fag fai fap fas fca fcc fce fcf fcg fci fcp fcs fea fec fee fef feg fei fep fes ffa ffc ffe fff ffg ffi ffp ffs fga fgc fge fgf fgg fgi fgp fgs fia fic fie fif fig fii fip fis fpa fpc fpe fpg fpi fpp fps fsa fsc fse fsf fsg fsi fsp fss g-p gaa gac gae gaf gag gai gap gas gca gcc gce gcf gcg gci gcp gcs ge- gea gec gee gef geg gei gep ges gfa gfc gfe gff gfi gfp gfs gga ggc ggg ggi ggp ggs gia gic gie gif gig gii gip gis gpa gpc gpe gpf gpg gpi gpp gps gsa gsc gse gsf gsg gsi gsp gss i-f ia- iaa iac iae iaf iag iai iap ias ica icc ice icf icg ici icp ics ie- iea iec iee ief ieg iei iep ies ifa ifc ife iff ifg ifi ifp ifs iga igc ige igf igg igi igp igs iia iic iie iif iii iip iis ipa ipc ipe ipf ipg ipi ipp ips is- isa isc ise isf isg isi isp iss p-p paa pac pae paf pag pai pap pas pca pcc pce pcf pcg pci pcp pcs pea pec pee pef peg pei pep pes pfa pfc pfe pff pfg pfi pfp pfs pga pgc pge pgf pgg pgi pgp pgs pia pic pie pif pig pii pip pis ppa ppc ppe ppf ppg ppi ppp pps ps- psa psc pse psf psg psi psp pss saa sac sae saf sag sai sap sas sca scc sce scf scg sci scp scs se- sea sec see sef seg sei sep ses sfa sfc sfe sff sfg sfi sfp sfs sga sgc sge sgf sgg sgi sgp sgs sia sic sie sif sig sii sip sis spa spc spe spf spg spi spp sps ss- ssa ssc sse ssf ssg ssi ssp sss