a-a aaa aag aao aap aav ag- aga agg ago agp agv aoa aog aoo aop aov ap- apa apg apo app apv av- ava avg avo avp g-p gaa gag gao gap gav gga ggg ggo ggp ggv goa gog goo gop gov gpa gpg gpo gpp gva gvg gvo gvp oaa oag oao oap oav oga ogg ogo ogp oo- ooa oog ooo oop oov op- opa opg opo opp opv ov- ova ovo ovp ovv p-p paa pag pao pap pav pga pgg pgo pgp pgv poa pog poo pop pov ppa ppg ppo ppp ppv pva pvg pvo pvp pvv v-a vaa vag vao vap vav vga vgg vgo vgp voa vog voo vop vov vpa vpg vpo vpp vva vvg vvo vvv