-al -er a-a a-c aaa aac aae aal aap aar aas aax ac- aca acc ace acl acp acr acs acx aea aec aee ael aep aer aes aex al- ala alc ale all alp alr als alx ap- apa apc ape apl app apr aps apx ar- ara arc are arl arp arr ars arx as- asa asc ase asl asp asr ass asx ax- axa axe axl axp axr axs axx c-- caa cac cae cal cap car cas cax cca ccc cce ccl ccp ccr ccs ccx ce- cea cec cee cel cep cer ces cex cl- cla clc cle cll clp clr cls clx cpa cpc cpe cpl cpp cpr cps cpx cra crc cre crl crp crr crs crx csa csc cse csl csp csr css csx cxc cxl cxp cxr cxs cxx eaa eac eae eal eap ear eas eax ec- eca ecc ece ecl ecr ecs ecx eea eec eee eel eep eer ees eex ela elc ele ell elp elr els elx ep- epa epc epe epl epp epr eps epx era erc ere erl erp err ers es- esa esc ese esl esp esr ess esx ex- exa exc exe exl exp exr exs exx l-p la- laa lac lae lal lap lar las lax lca lcc lce lcl lcp lcr lcs lcx lea lec lee lel lep ler les lex lla llc lle lll llp llr lls lpa lpc lpe lpl lpp lpr lps lpx lra lrc lrp lrr lrs lsa lsc lse lsl lsp lsr lss lxc lxr lxx p-p paa pac pae pal pap par pas pax pca pcc pce pcl pcp pcr pcs pcx pea pec pee pel pep per pes pex pla plc ple pll plp plr pls plx ppa ppc ppe ppl ppp ppr pps ppx pra prc pre prl prp prr prs prx ps- psa psc pse psl psp psr pss psx pxc pxe pxl pxr pxs ra- raa rac rae ral rap rar ras rax rca rcc rce rcl rcp rcr rcs rcx re- rea rec ree rel rep rer res rex rla rlc rle rll rlp rlr rls rpa rpc rpe rpl rpp rpr rps rpx rra rrc rrl rrp rrr rrs rsa rsc rse rsl rsp rsr rss rsx rxp rxr rxs saa sac sae sal sap sar sas sax sca scc sce scl scp scr scs scx se- sea sec see sel sep ser ses sex sla slc sle sll slp slr sls slx spa spc spe spl spp spr sps spx sr- sra src sre srl srp srr srs srx ss- ssa ssc sse ssl ssp ssr sss ssx sxc sxl sxs xaa xac xal xap xar xas xcl xcp xcr xcx xee xel xep xer xes xex xla xlr xls xpa xpc xpe xpl xpp xps xrc xrx xsa xsc xsl xsp xss xxl xxp xxx