-er a-a a-c aaa aac aae aag aah aap aar ac- aca acc ace acg ach acp acr aea aec aee aeg aeh aep aer ag- aga agc age agg agh agp agr aha ahc ahe ahg ahh ahp ahr ap- apa apc ape apg aph app apr ar- ara arc are arg arh arp arr c-- caa cac cae cag cah cap car cca ccc cce ccg cch ccp ccr ce- cea cec cee ceg ceh cep cer cga cgc cge cgg cgh cgp cgr ch- cha chc che chg chh chp chr cpa cpc cpe cpg cph cpp cpr cra crc cre crg crh crp crr eaa eac eae eag eah eap ear ec- eca ecc ece ecg ech ecr eea eec eee eeg eep eer ega egc ege egg egh egp egr eha ehc ehe ehg ehh ehp ehr ep- epa epc epe epg eph epp epr era erc ere erg erh erp err g-p gaa gac gae gag gah gap gar gca gcc gce gcg gch gcp gcr ge- gea gec gee geg geh gep ger gga ggc ggg ggh ggp ggr gha ghc ghe ghg ghh ghp ghr gpa gpc gpe gpg gph gpp gpr gra grc gre grg grh grp grr haa hac hae hag hah hap har hca hcc hce hcg hch hcp hcr he- hea hec hee heg heh hep her hga hgc hge hgg hgh hgp hgr hha hhc hhe hhg hhh hhp hhr hpa hpc hpe hpg hph hpp hpr hr- hra hrc hre hrg hrh hrp hrr p-p paa pac pae pag pah pap par pca pcc pce pcg pch pcp pcr pea pec pee peg peh pep per pga pgc pge pgg pgh pgp pgr pha phc phe phg php phr ppa ppc ppe ppg pph ppp ppr pra prc pre prg prh prp prr ra- raa rac rae rag rah rap rar rca rcc rce rcg rch rcp rcr re- rea rec ree reg reh rep rer rga rgc rge rgg rgh rgp rgr rh- rha rhc rhe rhg rhh rhp rhr rpa rpc rpe rpg rph rpp rpr rra rrc rrg rrh rrp rrr