-al a-a a-b aaa aab aad aae aal aau ab- aba abb abd abe abl abu ad- ada adb add ade adl adu aea aeb aed aee ael aeu al- ala alb ald ale all alu au- aua aub aud aue aul b-u baa bab bad bae bal bau bba bbb bbd bbe bbl bbu bda bdb bdd bde bdl bdu be- bea beb bed bee bel beu bla blb bld ble bll blu bua bub bud bue bul buu daa dab dad dae dal dau dba dbb dbd dbe dbl dbu dda ddb ddd dde ddl ddu de- dea deb ded dee del deu dl- dla dlb dld dle dll dlu dua dub dud due dul eaa eab ead eae eal eau eba ebb ebd ebe ebl ebu ed- eda edb edd ede edl edu eea eeb eed eee eel ela elb eld ele ell elu eu- eua eub eud eue eul la- laa lab lad lae lal lau lba lbb lbd lbe lbl lbu lda ldb ldd lde ldl ldu lea leb led lee lel leu lla llb lld lle lll llu lua lub lud lue lul luu ua- uaa uab uad uae ual uau uba ubb ube ubl ubu uda udb udd ude udl udu uea ueb ued uee uel ula ulb uld ule ull ulu uua uue uuu