-al a-a a-c aaa aac aae aal aap aas aax ac- aca acc ace acl acp acs acx aea aec aee ael aep aes aex al- ala alc ale all alp als alx ap- apa apc ape apl app aps apx as- asa asc ase asl asp ass asx ax- axa axe axl axp axs axx c-- caa cac cae cal cap cas cax cca ccc cce ccl ccp ccs ccx ce- cea cec cee cel cep ces cex cl- cla clc cle cll clp cls clx cpa cpc cpe cpl cpp cps cpx csa csc cse csl csp css csx cxc cxl cxp cxs cxx eaa eac eae eal eap eas eax ec- eca ecc ece ecl ecs ecx eea eec eee eel eep ees eex ela elc ele ell elp els elx ep- epa epc epe epl epp eps epx es- esa esc ese esl esp ess esx ex- exa exc exe exl exp exs exx l-p la- laa lac lae lal lap las lax lca lcc lce lcl lcp lcs lcx lea lec lee lel lep les lex lla llc lle lll llp lls lpa lpc lpe lpl lpp lps lpx lsa lsc lse lsl lsp lss lxc lxx p-p paa pac pae pal pap pas pax pca pcc pce pcl pcp pcs pcx pea pec pee pel pep pes pex pla plc ple pll plp pls plx ppa ppc ppe ppl ppp pps ppx ps- psa psc pse psl psp pss psx pxc pxe pxl pxs saa sac sae sal sap sas sax sca scc sce scl scp scs scx se- sea sec see sel sep ses sex sla slc sle sll slp sls slx spa spc spe spl spp sps spx ss- ssa ssc sse ssl ssp sss ssx sxc sxl sxs xaa xac xal xap xas xcl xcp xcx xee xel xep xes xex xla xls xpa xpc xpe xpl xpp xps xsa xsc xsl xsp xss xxl xxp xxx