-al a-a a-b aaa aab aad aae aal aav ab- aba abb abd abe abl abv ad- ada adb add ade adl adv aea aeb aed aee ael aev al- ala alb ald ale all alv av- ava avb avd ave avl baa bab bad bae bal bav bba bbb bbd bbe bbl bda bdb bdd bde bdl bdv be- bea beb bed bee bel bev bla blb bld ble bll blv bva bvb bvd bve bvl bvv daa dab dad dae dal dav dba dbb dbd dbe dbl dbv dda ddb ddd dde ddl de- dea deb ded dee del dev dl- dla dlb dld dle dll dlv dva dvb dvd dve dvl eaa eab ead eae eal eav eba ebb ebd ebe ebl ebv ed- eda edb edd ede edl eea eeb eed eee eel eev ela elb eld ele ell elv eva evb evd eve evl evv la- laa lab lad lae lal lav lba lbb lbd lbe lbl lbv lda ldb ldd lde ldl ldv lea leb led lee lel lev lla llb lld lle lll llv lva lvb lvd lve lvl lvv v-a v-e vaa vab vad vae val vav vba vbd vbl vbv vdb vdd vde vdl vdv vea veb ved vee vel vl- vla vlb vld vle vll vlv vva vvb vvv