-er -ic a-a a-c a-i aaa aac aae aag aai aam aap aar ac- aca acc ace acg aci acm acp acr aea aec aee aeg aei aem aep aer ag- aga agc age agg agi agm agp agr ai- aia aic aie aig aii aim aip air ama amc ame amg ami amm amp amr ap- apa apc ape apg api apm app apr ar- ara arc are arg ari arm arp arr c-- caa cac cae cag cai cam cap car cca ccc cce ccg cci ccm ccp ccr ce- cea cec cee ceg cei cem cep cer cga cgc cge cgg cgi cgm cgp cgr ci- cia cic cie cig cii cim cip cir cma cmc cme cmg cmi cmm cmp cmr cpa cpc cpe cpg cpi cpm cpp cpr cra crc cre crg cri crm crp crr eaa eac eae eag eai eam eap ear ec- eca ecc ece ecg eci ecm ecr eea eec eee eeg eem eep eer ega egc ege egg egi egm egp egr eia eic eie eig eii eim eip eir em- ema emc eme emg emi emm emp emr ep- epa epc epe epg epi epm epp epr era erc ere erg eri erm erp err g-p gaa gac gae gag gai gam gap gar gca gcc gce gcg gci gcm gcp gcr ge- gea gec gee geg gei gem gep ger gga ggc ggg ggi ggm ggp ggr gia gic gie gig gii gim gip gir gma gmc gme gmg gmi gmm gmp gmr gpa gpc gpe gpg gpi gpm gpp gpr gra grc gre grg gri grm grp grr ia- iaa iac iae iag iai iam iap iar ica icc ice icg ici icm icp icr ie- iea iec iee ieg iei iem iep ier iga igc ige igg igi igm igp igr iia iic iie iii iim iip iir im- ima imc ime img imi imm imp ipa ipc ipe ipg ipi ipm ipp ipr ir- ira irc ire irg iri irm irp irr m-r maa mac mae mag mai mam map mar mc- mca mcc mce mcg mci mcm mcp mcr mea mec mee meg mei mem mep mer mga mgc mge mgi mgm mgp mgr mi- mia mic mie mig mii mim mip mir mma mmc mme mmg mmi mmm mmp mmr mpa mpc mpe mpg mpi mpm mpp mpr mra mrc mre mrg mri mrm mrp mrr p-p paa pac pae pag pai pam pap par pca pcc pce pcg pci pcm pcp pcr pea pec pee peg pei pem pep per pga pgc pge pgg pgi pgm pgp pgr pia pic pie pig pii pim pip pir pma pmc pme pmg pmi pmm pmp pmr ppa ppc ppe ppg ppi ppm ppp ppr pra prc pre prg pri prm prp prr ra- raa rac rae rag rai ram rap rar rca rcc rce rcg rci rcm rcp rcr re- rea rec ree reg rei rem rep rer rga rgc rge rgg rgi rgp rgr ria ric rie rig rii rim rip rir rma rmc rme rmg rmi rmm rmp rmr rpa rpc rpe rpg rpi rpm rpp rpr rra rrc rrg rri rrm rrp rrr