-al -ol a-a a-b a-c aaa aab aac aak aal aao aau ab- aba abb abc abk abl abo abu ac- aca acb acc ack acl aco acu aka akb akc akk akl ako aku al- ala alb alc alk all alo alu aoa aob aoc aok aol aoo aou au- aua aub auc auk aul auo b-u baa bab bac bak bal bao bau bba bbb bbc bbk bbl bbo bbu bca bcb bcc bck bcl bco bcu bka bkb bkc bkk bkl bko bla blb blc blk bll blo blu boa bob boc bok bol boo bou bua bub buc buk bul buo buu c-- caa cab cac cak cal cao cau cba cbb cbc cbk cbl cbo cbu cca ccb ccc cck ccl cco ccu cka ckb ckc cko cl- cla clb clc clk cll clo clu co- coa cob coc cok col coo cou cua cub cuc cuk cul cuo cuu ka- kaa kab kac kak kal kao kau kba kbb kbc kbk kbl kbo kbu kca kcb kcc kck kcl kcu kkb kkc kkk kkl kku kl- kla klb klc klo klu koa kob koc kok kol koo kou kub kuc kuk kul kuu la- laa lab lac lak lal lao lau lba lbb lbc lbk lbl lbo lbu lca lcb lcc lck lcl lco lcu lka lkb lkl lla llb llc llk lll llo llu loa lob loc lok lol loo lou lua lub luc luk lul luo luu oaa oab oac oak oal oao oau ob- oba obb obc obk obl obo obu oc- oca ocb occ ock ocl oco ocu oka okb okc okk okl oko oku ola olb olc olk oll olo olu oo- ooa oob ooc ook ool ooo ou- oua ouc ouk oul ouo ua- uaa uab uac uak ual uao uau uba ubb ubc ubk ubl ubo ubu uca ucb ucc uck ucl uco ucu uka ukb ukc ukk ukl uku ula ulb ulc ulk ull ulo ulu uoa uob uoc uok uol uoo uua uuc uuu