-al a-a a-b a-c aaa aab aac aak aal aas aau ab- aba abb abc abk abl abs abu ac- aca acb acc ack acl acs acu aka akb akc akk akl aks aku al- ala alb alc alk all als alu as- asa asb asc ask asl ass asu au- aua aub auc auk aul aus b-u baa bab bac bak bal bas bau bba bbb bbc bbk bbl bbs bbu bca bcb bcc bck bcl bcs bcu bka bkb bkc bkk bkl bks bla blb blc blk bll bls blu bsa bsb bsc bsk bsl bss bsu bua bub buc buk bul bus buu c-- caa cab cac cak cal cas cau cba cbb cbc cbk cbl cbs cbu cca ccb ccc cck ccl ccs ccu cka ckb ckc cks cl- cla clb clc clk cll cls clu csa csb csc csk csl css csu cua cub cuc cuk cul cus cuu ka- kaa kab kac kak kal kas kau kba kbb kbc kbk kbl kbs kbu kca kcb kcc kck kcl kcs kcu kkb kkc kkk kkl kks kku kl- kla klb klc kls klu ksa ksb ksc ksk ksl kss ksu kub kuc kuk kul kus kuu la- laa lab lac lak lal las lau lba lbb lbc lbk lbl lbs lbu lca lcb lcc lck lcl lcs lcu lka lkb lkl lks lla llb llc llk lll lls llu lsa lsb lsc lsk lsl lss lsu lua lub luc luk lul lus luu saa sab sac sak sal sas sau sba sbb sbc sbk sbl sbs sbu sca scb scc sck scl scs scu sk- ska skb skc skk skl sks sku sla slb slc slk sll sls slu ss- ssa ssb ssc ssk ssl sss ssu sua sub suc suk sul sus suu ua- uaa uab uac uak ual uas uau uba ubb ubc ubk ubl ubs ubu uca ucb ucc uck ucl ucs ucu uka ukb ukc ukk ukl uku ula ulb ulc ulk ull uls ulu usa usb usc usk usl uss usu uua uuc uus uuu