a-a a-t aaa aad aao aar aat aav ad- ada add ado adr adt adv aoa aod aoo aor aot aov ar- ara ard aro arr art arv at- ata atd ato atr att atv av- ava avd avo avr avt daa dad dao dar dat dav dda ddd ddo ddr ddt doa dod doo dor dot dov dra drd dro drr drt drv dta dtd dto dtr dtt dtv dva dvd dvr dvt oaa oad oao oar oat oav oda odd odo odr odt odv oo- ooa ood ooo oor oot oov or- ora ord oro orr ort orv ot- ota otd oto otr ott otv ov- ova ovd ovo ovv ra- raa rad rao rar rat rav rda rdd rdo rdr rdt rdv roa rod roo ror rot rov rra rrd rrr rrt rta rtd rto rtr rtt rtv rva rvd rvo rvr rvt rvv taa tad tao tar tat tav tda tdd tdo tdr tdt tdv to- toa tod too tor tot tov tra trd tro trr trt trv tta ttd tto ttr ttt ttv tva tvd tvo tvr tvt v-a vaa vad vao var vat vav vdd vdo vdr vdt vdv voa vod voo vor vot vov vra vrd vrr vrt vta vto vtr vtt vtv vva vvo vvr vvt vvv