a-a a-c aaa aac aag aao aar aav ac- aca acc acg aco acr acv ag- aga agc agg ago agr agv aoa aoc aog aoo aor aov ar- ara arc arg aro arr arv av- ava avc avg avo avr c-- caa cac cag cao car cav cca ccc ccg cco ccr ccv cga cgc cgg cgo cgr cgv co- coa coc cog coo cor cov cra crc crg cro crr crv cva cvc cvg cvo cvr cvv gaa gac gag gao gar gav gca gcc gcg gco gcr gga ggc ggg ggo ggr ggv goa goc gog goo gor gov gra grc grg gro grr grv gva gvc gvg gvo gvr oaa oac oag oao oar oav oc- oca occ ocg oco ocr ocv oga ogc ogg ogo oo- ooa ooc oog ooo oor oov or- ora orc org oro orr orv ov- ova ovc ovo ovv ra- raa rac rag rao rar rav rca rcc rcg rco rcr rcv rga rgc rgg rgo rgr rgv roa roc rog roo ror rov rra rrc rrg rrr rva rvc rvg rvo rvr rvv v-a vaa vac vag vao var vav vca vcc vco vcr vga vgc vgg vgo vgr voa voc vog voo vor vov vra vrc vrg vrr vva vvc vvg vvo vvr vvv