-al a-a a-b a-c aaa aab aac aaj aal aau ab- aba abb abc abj abl abu ac- aca acb acc acj acl acu aja ajb ajc ajj ajl aju al- ala alb alc alj all alu au- aua aub auc auj aul b-u baa bab bac baj bal bau bba bbb bbc bbl bbu bca bcb bcc bcj bcl bcu bja bjc bjj bju bla blb blc blj bll blu bua bub buc buj bul buu c-- c-j caa cab cac caj cal cau cba cbb cbc cbj cbl cbu cca ccb ccc ccj ccl ccu cja cjb cjc cl- cla clb clc clj cll clu cua cub cuc cul cuu jaa jab jac jaj jal jau jba jbc jbj jbl jbu jca jcb jcc jcl jcu jja jjb jjc jjj jjl jju jla jlb jlc jll jlu jub jul la- laa lab lac laj lal lau lba lbb lbc lbj lbl lbu lca lcb lcc lcj lcl lcu ljj lju lla llb llc llj lll llu lua lub luc lul luu ua- uaa uab uac uaj ual uau uba ubb ubc ubl ubu uca ucb ucc ucj ucl ucu ujc ula ulb ulc ull ulu uua uuc uuu