-al -ol a-a a-b aaa aab aae aal aao aau ab- aba abb abe abl abo abu aea aeb aee ael aeo aeu al- ala alb ale all alo alu aoa aob aoe aol aoo aou au- aua aub aue aul auo b-u baa bab bae bal bao bau bba bbb bbe bbl bbo bbu be- bea beb bee bel beo beu bla blb ble bll blo blu boa bob boe bol boo bou bua bub bue bul buo buu eaa eab eae eal eao eau eba ebb ebe ebl ebo ebu eea eeb eee eel eeo ela elb ele ell elo elu eo- eoa eob eoe eol eoo eou eu- eua eub eue eul la- laa lab lae lal lao lau lba lbb lbe lbl lbo lbu lea leb lee lel leo leu lla llb lle lll llo llu loa lob loe lol loo lou lua lub lue lul luo luu oaa oab oae oal oao oau ob- oba obb obe obl obo obu oea oeb oee oel oeo ola olb ole oll olo olu oo- ooa oob ool ooo ou- oua oue oul ouo ua- uaa uab uae ual uao uau uba ubb ube ubl ubo ubu uea ueb uee uel ula ulb ule ull ulo ulu uoa uob uoe uol uoo uua uue uuu