-al a-a a-b aaa aab aad aal aar aav ab- aba abb abd abl abr abv ad- ada adb add adl adr adv al- ala alb ald all alr alv ar- ara arb ard arl arr arv av- ava avb avd avl avr baa bab bad bal bar bav bba bbb bbd bbl bbr bda bdb bdd bdl bdr bdv bla blb bld bll blr blv bra brb brd brl brr brv bva bvb bvd bvl bvr bvv daa dab dad dal dar dav dba dbb dbd dbl dbr dbv dda ddb ddd ddl ddr dl- dla dlb dld dll dlr dlv dra drb drd drl drr drv dva dvb dvd dvl dvr la- laa lab lad lal lar lav lba lbb lbd lbl lbr lbv lda ldb ldd ldl ldr ldv lla llb lld lll llr llv lra lrb lrd lrr lrv lva lvb lvd lvl lvr lvv ra- raa rab rad ral rar rav rba rbb rbd rbl rbr rda rdb rdd rdl rdr rdv rla rld rll rlr rra rrb rrd rrl rrr rva rvb rvd rvl rvr rvv v-a vaa vab vad val var vav vba vbd vbl vbr vbv vdb vdd vdl vdr vdv vl- vla vlb vld vll vlv vra vrb vrd vrr vva vvb vvr vvv