-al a-a a-b a-t aaa aab aad aal aan aat aau ab- aba abb abd abl abn abt abu ad- ada adb add adl adn adt adu al- ala alb ald all aln alt alu an- ana anb and anl ann ant anu at- ata atb atd atl atn att atu au- aua aub aud aul aun aut b-u baa bab bad bal ban bat bau bba bbb bbd bbl bbn bbt bbu bda bdb bdd bdl bdt bdu bla blb bld bll bln blt blu bna bnb bnd bnl bnn bnt bnu bta btb btd btl btn btt btu bua bub bud bul bun but buu daa dab dad dal dan dat dau dba dbb dbd dbl dbn dbt dbu dda ddb ddd ddl ddn ddt ddu dl- dla dlb dld dll dlt dlu dna dnb dnd dnl dnn dnt dta dtb dtd dtl dtn dtt dtu dua dub dud dul dun dut la- laa lab lad lal lan lat lau lba lbb lbd lbl lbt lbu lda ldb ldd ldl ldn ldt ldu lla llb lld lll lln llt llu lna lnb lnd lnl lnn lnt lnu lta ltb ltd ltl ltt ltu lua lub lud lul lun lut luu naa nab nad nal nan nat nau nba nbb nbd nbl nbn nbt nbu nda ndb ndd ndl ndn ndt ndu nla nlb nld nll nln nlt nlu nna nnb nnl nnn nnt nnu nta ntb ntd ntn ntt ntu nua nub nud nul nun nut nuu taa tab tad tal tan tat tau tba tbb tbd tbl tbn tbt tbu tda tdb tdd tdl tdn tdt tdu tla tld tll tln tlt tlu tna tnb tnd tnl tnn tnt tta ttb ttd ttl ttn ttt ttu tua tub tud tul tun tut tuu ua- uaa uab uad ual uan uat uau uba ubb ubl ubn ubt ubu uda udb udd udl udn udt udu ula ulb uld ull uln ult ulu un- una unb und unl unn unt unu uta utb utd utl utn utt utu uua uun uut uuu