-al a-a a-b a-c a-t aaa aab aac aad aae aal aat aau ab- aba abb abc abd abe abl abt abu ac- aca acb acc acd ace acl act acu ad- ada adb adc add ade adl adt adu aea aeb aec aed aee ael aet aeu al- ala alb alc ald ale all alt alu at- ata atb atc atd ate atl att atu au- aua aub auc aud aue aul aut b-u baa bab bac bad bae bal bat bau bba bbb bbc bbd bbe bbl bbt bbu bca bcb bcc bcd bce bcl bct bcu bda bdb bdc bdd bde bdl bdt bdu be- bea beb bec bed bee bel bet beu bla blb blc bld ble bll blt blu bta btb btc btd bte btl btt btu bua bub buc bud bue bul but buu c-- caa cab cac cad cae cal cat cau cba cbb cbc cbd cbe cbl cbt cbu cca ccb ccc ccd cce ccl cct ccu cda cdb cdc cdd cde cdl cdt cdu ce- cea ceb cec ced cee cel cet ceu cl- cla clb clc cld cle cll clt clu cta ctb ctc ctd cte ctl ctt ctu cua cub cuc cud cue cul cut cuu daa dab dac dad dae dal dat dau dba dbb dbc dbd dbe dbl dbt dbu dca dcb dcc dcd dce dcl dct dcu dda ddb ddc ddd dde ddl ddt ddu de- dea deb dec ded dee del det deu dl- dla dlb dlc dld dle dll dlt dlu dta dtb dtc dtd dte dtl dtt dtu dua dub duc dud due dul dut eaa eab eac ead eae eal eat eau eba ebb ebc ebd ebe ebl ebt ebu ec- eca ecb ecc ecd ece ecl ect ecu ed- eda edb edc edd ede edl edt edu eea eeb eec eed eee eel eet ela elb elc eld ele ell elt elu eta etb etc etd ete etl ett etu eu- eua eub euc eud eue eul eut la- laa lab lac lad lae lal lat lau lba lbb lbc lbd lbe lbl lbt lbu lca lcb lcc lcd lce lcl lct lcu lda ldb ldc ldd lde ldl ldt ldu lea leb lec led lee lel let leu lla llb llc lld lle lll llt llu lta ltb ltc ltd lte ltl ltt ltu lua lub luc lud lue lul lut luu taa tab tac tad tae tal tat tau tba tbb tbc tbd tbe tbl tbt tbu tca tcb tcc tcd tce tcl tct tcu tda tdb tdc tdd tde tdl tdt tdu te- tea teb tec ted tee tel tet teu tla tlc tld tle tll tlt tlu tta ttb ttc ttd tte ttl ttt ttu tua tub tuc tud tue tul tut tuu ua- uaa uab uac uad uae ual uat uau uba ubb ubc ube ubl ubt ubu uca ucb ucc ucd uce ucl uct ucu uda udb udc udd ude udl udt udu uea ueb uec ued uee uel uet ula ulb ulc uld ule ull ult ulu uta utb utc utd ute utl utt utu uua uuc uue uut uuu