-al a-a a-b a-c a-t aaa aab aac aak aal aat aau ab- aba abb abc abk abl abt abu ac- aca acb acc ack acl act acu aka akb akc akk akl aku al- ala alb alc alk all alt alu at- ata atb atc atl att atu au- aua aub auc auk aul aut b-u baa bab bac bak bal bat bau bba bbb bbc bbk bbl bbt bbu bca bcb bcc bck bcl bct bcu bka bkb bkc bkk bkl bkt bla blb blc blk bll blt blu bta btb btc btk btl btt btu bua bub buc buk bul but buu c-- caa cab cac cak cal cat cau cba cbb cbc cbk cbl cbt cbu cca ccb ccc cck ccl cct ccu cka ckb ckc ckt cl- cla clb clc clk cll clt clu cta ctb ctc ctk ctl ctt ctu cua cub cuc cuk cul cut cuu k-t ka- kaa kab kac kak kal kat kau kba kbb kbc kbk kbl kbu kca kcb kcc kck kcl kct kcu kkb kkc kkk kkl kkt kku kl- kla klb klc klt klu kta ktb ktc ktk ktl ktt ktu kub kuc kuk kul kut kuu la- laa lab lac lak lal lat lau lba lbb lbc lbk lbl lbt lbu lca lcb lcc lck lcl lct lcu lka lkb lkl lkt lla llb llc llk lll llt llu lta ltb ltc ltk ltl ltt ltu lua lub luc luk lul lut luu taa tab tac tak tal tat tau tba tbb tbc tbk tbl tbt tbu tca tcb tcc tck tcl tct tcu tka tkb tkc tkk tkl tkt tla tlc tlk tll tlt tlu tta ttb ttc ttk ttl ttt ttu tua tub tuc tuk tul tut tuu ua- uaa uab uac uak ual uat uau uba ubb ubc ubk ubl ubt ubu uca ucb ucc uck ucl uct ucu uka ukb ukc ukk ukl uku ula ulb ulc ulk ull ult ulu uta utb utc utk utl utt utu uua uuc uut uuu