-al a-a a-b a-t aaa aab aad aae aal aat aau ab- aba abb abd abe abl abt abu ad- ada adb add ade adl adt adu aea aeb aed aee ael aet aeu al- ala alb ald ale all alt alu at- ata atb atd ate atl att atu au- aua aub aud aue aul aut b-u baa bab bad bae bal bat bau bba bbb bbd bbe bbl bbt bbu bda bdb bdd bde bdl bdt bdu be- bea beb bed bee bel bet beu bla blb bld ble bll blt blu bta btb btd bte btl btt btu bua bub bud bue bul but buu daa dab dad dae dal dat dau dba dbb dbd dbe dbl dbt dbu dda ddb ddd dde ddl ddt ddu de- dea deb ded dee del det deu dl- dla dlb dld dle dll dlt dlu dta dtb dtd dte dtl dtt dtu dua dub dud due dul dut eaa eab ead eae eal eat eau eba ebb ebd ebe ebl ebt ebu ed- eda edb edd ede edl edt edu eea eeb eed eee eel eet ela elb eld ele ell elt elu eta etb etd ete etl ett etu eu- eua eub eud eue eul eut la- laa lab lad lae lal lat lau lba lbb lbd lbe lbl lbt lbu lda ldb ldd lde ldl ldt ldu lea leb led lee lel let leu lla llb lld lle lll llt llu lta ltb ltd lte ltl ltt ltu lua lub lud lue lul lut luu taa tab tad tae tal tat tau tba tbb tbd tbe tbl tbt tbu tda tdb tdd tde tdl tdt tdu te- tea teb ted tee tel tet teu tla tld tle tll tlt tlu tta ttb ttd tte ttl ttt ttu tua tub tud tue tul tut tuu ua- uaa uab uad uae ual uat uau uba ubb ube ubl ubt ubu uda udb udd ude udl udt udu uea ueb ued uee uel uet ula ulb uld ule ull ult ulu uta utb utd ute utl utt utu uua uue uut uuu