-er a-a a-c aaa aac aae aag aaj aar aav ac- aca acc ace acg acj acr acv aea aec aee aeg aej aer aev ag- aga agc age agg agj agr agv aja ajc aje ajj ajr ar- ara arc are arg arj arr arv av- ava avc ave avg avr c-- c-j caa cac cae cag caj car cav cca ccc cce ccg ccj ccr ccv ce- cea cec cee ceg cej cer cev cga cgc cge cgg cgr cgv cja cjc cjg cjr cra crc cre crg crj crr crv cva cvc cve cvg cvr cvv eaa eac eae eag eaj ear eav ec- eca ecc ece ecg ecj ecr ecv eea eec eee eeg eer eev ega egc ege egg egr eja ejc era erc ere erg err erv eva evc eve evg evr evv gaa gac gae gag gaj gar gav gca gcc gce gcg gcr ge- gea gec gee geg ger gev gga ggc ggg ggj ggr ggv gja gjc gje gjg gjr gra grc gre grg grj grr grv gva gvc gve gvg gvr jaa jac jae jag jaj jar jav jca jcc jce jcr jea jec jee jeg jej jer jga jge jgr jja jjc jjg jjj jjr jra jrc jrg jrr jvc jvg ra- raa rac rae rag raj rar rav rca rcc rce rcg rcj rcr rcv re- rea rec ree reg rer rev rga rgc rge rgg rgr rgv rja rjc rjg rjr rra rrc rrg rrr rva rvc rve rvg rvr rvv v-a v-e vaa vac vae vag vaj var vav vca vcc vce vcr vea vec vee veg ver vga vgc vgg vgr vja vra vrc vre vrg vrr vva vvc vvg vvr vvv