-er a-a a-c aaa aac aae aag aah aar aav ac- aca acc ace acg ach acr acv aea aec aee aeg aeh aer aev ag- aga agc age agg agh agr agv aha ahc ahe ahg ahh ahr ahv ar- ara arc are arg arh arr arv av- ava avc ave avg avh avr c-- caa cac cae cag cah car cav cca ccc cce ccg cch ccr ccv ce- cea cec cee ceg ceh cer cev cga cgc cge cgg cgh cgr cgv ch- cha chc che chg chh chr chv cra crc cre crg crh crr crv cva cvc cve cvg cvh cvr cvv eaa eac eae eag eah ear eav ec- eca ecc ece ecg ech ecr ecv eea eec eee eeg eer eev ega egc ege egg egh egr eha ehc ehe ehg ehh ehr ehv era erc ere erg erh err erv eva evc eve evg evh evr evv gaa gac gae gag gah gar gav gca gcc gce gcg gch gcr ge- gea gec gee geg geh ger gev gga ggc ggg ggh ggr ggv gha ghc ghe ghg ghh ghr gra grc gre grg grh grr grv gva gvc gve gvg gvh gvr haa hac hae hag hah har hav hca hcc hce hcg hch hcr hcv he- hea hec hee heg heh her hev hga hgc hge hgg hgh hgr hgv hha hhc hhe hhg hhh hhr hhv hr- hra hrc hre hrg hrh hrr hrv hv- hva hvc hvg hvr hvv ra- raa rac rae rag rah rar rav rca rcc rce rcg rch rcr rcv re- rea rec ree reg reh rer rev rga rgc rge rgg rgh rgr rgv rh- rha rhc rhe rhg rhh rhr rhv rra rrc rrg rrh rrr rva rvc rve rvg rvh rvr rvv v-a v-e vaa vac vae vag vah var vav vca vcc vce vch vcr vea vec vee veg veh ver vga vgc vgg vgh vgr vh- vha vhc vhe vra vrc vre vrg vrh vrr vva vvc vvg vvr vvv