-al a-a a-b aaa aab aad aal aan aar aav ab- aba abb abd abl abn abr abv ad- ada adb add adl adn adr adv al- ala alb ald all aln alr alv an- ana anb and anl ann anr anv ar- ara arb ard arl arn arr arv av- ava avb avd avl avn avr baa bab bad bal ban bar bav bba bbb bbd bbl bbn bbr bda bdb bdd bdl bdr bdv bla blb bld bll bln blr blv bna bnb bnd bnl bnn bnr bnv bra brb brd brl brn brr brv bva bvb bvd bvl bvn bvr bvv daa dab dad dal dan dar dav dba dbb dbd dbl dbn dbr dbv dda ddb ddd ddl ddn ddr dl- dla dlb dld dll dlr dlv dna dnb dnd dnl dnn dnr dra drb drd drl drn drr drv dva dvb dvd dvl dvn dvr la- laa lab lad lal lan lar lav lba lbb lbd lbl lbr lbv lda ldb ldd ldl ldn ldr ldv lla llb lld lll lln llr llv lna lnb lnd lnl lnn lnr lra lrb lrd lrn lrr lrv lva lvb lvd lvl lvn lvr lvv naa nab nad nal nan nar nav nba nbb nbd nbl nbn nbr nbv nda ndb ndd ndl ndn ndr ndv nla nlb nld nll nln nlr nlv nna nnb nnl nnn nnv nra nrb nrd nrl nrn nrr nrv nva nvb nvd nvl nvn nvv ra- raa rab rad ral ran rar rav rba rbb rbd rbl rbn rbr rda rdb rdd rdl rdn rdr rdv rla rld rll rln rlr rna rnb rnd rnn rnr rnv rra rrb rrd rrl rrn rrr rva rvb rvd rvl rvn rvr rvv v-a vaa vab vad val van var vav vba vbd vbl vbr vbv vdb vdd vdl vdr vdv vl- vla vlb vld vll vlv vn- vna vnd vnl vnr vnv vra vrb vrd vrn vrr vva vvb vvr vvv