-er a-a a-c aaa aac aad aae aag aah aap aar ac- aca acc acd ace acg ach acp acr ad- ada adc add ade adg adh adp adr aea aec aed aee aeg aeh aep aer ag- aga agc agd age agg agh agp agr aha ahc ahd ahe ahg ahh ahp ahr ap- apa apc apd ape apg aph app apr ar- ara arc ard are arg arh arp arr c-- caa cac cad cae cag cah cap car cca ccc ccd cce ccg cch ccp ccr cda cdc cdd cde cdg cdh cdp cdr ce- cea cec ced cee ceg ceh cep cer cga cgc cgd cge cgg cgh cgp cgr ch- cha chc chd che chg chh chp chr cpa cpc cpd cpe cpg cph cpp cpr cra crc crd cre crg crh crp crr daa dac dad dae dag dah dap dar dca dcc dcd dce dcg dcp dcr dda ddc ddd dde ddg ddh ddp ddr de- dea dec ded dee deg deh dep der dga dgc dgd dge dgg dgh dgp dgr dh- dha dhc dhd dhe dhh dhp dhr dpa dpc dpd dpe dpg dph dpp dpr dra drc drd dre drg drp drr eaa eac ead eae eag eah eap ear ec- eca ecc ecd ece ecg ech ecr ed- eda edc edd ede edg edh edp edr eea eec eed eee eeg eep eer ega egc egd ege egg egh egp egr eha ehc ehd ehe ehg ehh ehp ehr ep- epa epc epd epe epg eph epp epr era erc erd ere erg erh erp err g-d g-p gaa gac gad gae gag gah gap gar gca gcc gcd gce gcg gch gcp gcr gda gdc gdd gde gdh gdp gdr ge- gea gec ged gee geg geh gep ger gga ggc ggd ggg ggh ggp ggr gha ghc ghd ghe ghg ghh ghp ghr gpa gpc gpd gpe gpg gph gpp gpr gra grc grd gre grg grh grp grr haa hac had hae hag hah hap har hca hcc hcd hce hcg hch hcp hcr hda hdc hdd hde hdg hdh hdp hdr he- hea hec hed hee heg heh hep her hga hgc hge hgg hgh hgp hgr hha hhc hhd hhe hhg hhh hhp hhr hpa hpc hpd hpe hpg hph hpp hpr hr- hra hrc hrd hre hrg hrh hrp hrr p-p paa pac pad pae pag pah pap par pca pcc pcd pce pcg pch pcp pcr pda pdc pdd pde pdg pdh pdp pdr pea pec ped pee peg peh pep per pga pgc pgd pge pgg pgh pgp pgr pha phc phd phe phg php phr ppa ppc ppd ppe ppg pph ppp ppr pra prc prd pre prg prh prp prr ra- raa rac rad rae rag rah rap rar rca rcc rcd rce rcg rch rcp rcr rda rdc rdd rde rdg rdh rdp rdr re- rea rec red ree reg reh rep rer rga rgc rgd rge rgg rgh rgp rgr rh- rha rhc rhd rhe rhg rhh rhp rhr rpa rpc rpd rpe rpg rph rpp rpr rra rrc rrd rrg rrh rrp rrr