-al a-a a-b a-c aaa aab aac aal aau aax ab- aba abb abc abl abu abx ac- aca acb acc acl acu acx al- ala alb alc all alu alx au- aua aub auc aul aux ax- axa axl axx b-u baa bab bac bal bau bax bba bbb bbc bbl bbu bbx bca bcb bcc bcl bcu bcx bla blb blc bll blu blx bua bub buc bul buu bux bxb bxl bxx c-- caa cab cac cal cau cax cba cbb cbc cbl cbu cbx cca ccb ccc ccl ccu ccx cl- cla clb clc cll clu clx cua cub cuc cul cuu cxc cxl cxx la- laa lab lac lal lau lax lba lbb lbc lbl lbu lbx lca lcb lcc lcl lcu lcx lla llb llc lll llu lua lub luc lul luu lux lxc lxx ua- uaa uab uac ual uau uba ubb ubc ubl ubu ubx uca ucb ucc ucl ucu ula ulb ulc ull ulu uua uuc uuu uxb uxc uxu xaa xac xal xau xbc xbl xbx xcb xcl xcx xla xlb xul xxl xxx