a-a a-b aaa aab aad aag aan aav ab- aba abb abd abg abn abv ad- ada adb add adg adn adv ag- aga agb agd agg agn agv an- ana anb and ang ann anv av- ava avb avd avg avn baa bab bad bag ban bav bba bbb bbd bbg bbn bda bdb bdd bdg bdv bga bgb bgd bgg bgn bgv bna bnb bnd bng bnn bnv bva bvb bvd bvg bvn bvv daa dab dad dag dan dav dba dbb dbd dbg dbn dbv dda ddb ddd ddg ddn dga dgd dgg dgn dna dnb dnd dng dnn dva dvb dvd dvg dvn g-d gaa gab gad gag gan gav gba gbd gbg gbn gbv gda gdb gdd gdn gdv gga ggb ggd ggg ggn ggv gna gnb gnd gnn gnv gva gvb gvd gvg gvn naa nab nad nag nan nav nba nbb nbd nbg nbn nbv nda ndb ndd ndg ndn ndv nga ngb ngd ngg ngn nna nnb nng nnn nnv nva nvb nvd nvg nvn nvv v-a vaa vab vad vag van vav vba vbd vbg vbv vdb vdd vdg vdv vga vgg vgn vn- vna vnd vng vnv vva vvb vvg vvv