-al -ol a-a a-b aaa aab aad aal aan aao aau ab- aba abb abd abl abn abo abu ad- ada adb add adl adn ado adu al- ala alb ald all aln alo alu an- ana anb and anl ann ano anu aoa aob aod aol aon aoo aou au- aua aub aud aul aun auo b-u baa bab bad bal ban bao bau bba bbb bbd bbl bbn bbo bbu bda bdb bdd bdl bdo bdu bla blb bld bll bln blo blu bna bnb bnd bnl bnn bno bnu boa bob bod bol bon boo bou bua bub bud bul bun buo buu daa dab dad dal dan dao dau dba dbb dbd dbl dbn dbo dbu dda ddb ddd ddl ddn ddo ddu dl- dla dlb dld dll dlo dlu dna dnb dnd dnl dnn dno doa dob dod dol don doo dou dua dub dud dul dun duo la- laa lab lad lal lan lao lau lba lbb lbd lbl lbo lbu lda ldb ldd ldl ldn ldo ldu lla llb lld lll lln llo llu lna lnb lnd lnl lnn lno lnu loa lob lod lol lon loo lou lua lub lud lul lun luo luu naa nab nad nal nan nao nau nba nbb nbd nbl nbn nbo nbu nda ndb ndd ndl ndn ndo ndu nla nlb nld nll nln nlo nlu nna nnb nnl nnn nno nnu no- noa nob nod nol non noo nou nua nub nud nul nun nuo nuu oaa oab oad oal oan oao oau ob- oba obb obd obl obn obo obu oda odb odd odl odn odo odu ola olb old oll oln olo olu on- ona onb ond onl onn ono onu oo- ooa oob ood ool oon ooo ou- oua oud oul oun ouo ua- uaa uab uad ual uan uao uau uba ubb ubl ubn ubo ubu uda udb udd udl udn udo udu ula ulb uld ull uln ulo ulu un- una unb und unl unn uno unu uoa uob uod uol uon uoo uua uun uuu