-al -er a-a a-c aaa aac aae aak aal aap aar aas ac- aca acc ace ack acl acp acr acs aea aec aee aek ael aep aer aes aka akc ake akk akl akp akr aks al- ala alc ale alk all alp alr als ap- apa apc ape apk apl app apr aps ar- ara arc are ark arl arp arr ars as- asa asc ase ask asl asp asr ass c-- caa cac cae cak cal cap car cas cca ccc cce cck ccl ccp ccr ccs ce- cea cec cee cek cel cep cer ces cka ckc cks cl- cla clc cle clk cll clp clr cls cpa cpc cpe cpk cpl cpp cpr cps cra crc cre crk crl crp crr crs csa csc cse csk csl csp csr css eaa eac eae eak eal eap ear eas ec- eca ecc ece eck ecl ecr ecs eea eec eee eek eel eep eer ees eka ekc eke ekl ekp ekr eks ela elc ele elk ell elp elr els ep- epa epc epe epl epp epr eps era erc ere erk erl erp err ers es- esa esc ese esk esl esp esr ess ka- kaa kac kae kak kal kap kar kas kca kcc kce kck kcl kcp kcr kcs ke- kea kec kee kek kel kep ker kes kkc kke kkk kkl kkp kkr kks kl- kla klc klr kls kpa kpc kpe kpk kpl kpp kpr kps kra krc krk krl krp krr krs ksa ksc kse ksk ksl ksp ksr kss l-p la- laa lac lae lak lal lap lar las lca lcc lce lck lcl lcp lcr lcs lea lec lee lek lel lep ler les lka lkl lkp lkr lks lla llc lle llk lll llp llr lls lpa lpc lpe lpk lpl lpp lpr lps lra lrc lrk lrp lrr lrs lsa lsc lse lsk lsl lsp lsr lss p-p paa pac pae pak pal pap par pas pca pcc pce pck pcl pcp pcr pcs pea pec pee pek pel pep per pes pka pkc pke pkl pkp pkr pks pla plc ple plk pll plp plr pls ppa ppc ppe ppk ppl ppp ppr pps pra prc pre prk prl prp prr prs ps- psa psc pse psk psl psp psr pss ra- raa rac rae rak ral rap rar ras rca rcc rce rcl rcp rcr rcs re- rea rec ree rek rel rep rer res rkc rke rkk rkp rks rla rlc rle rll rlp rlr rls rpa rpc rpe rpk rpl rpp rpr rps rra rrc rrk rrl rrp rrr rrs rsa rsc rse rsk rsl rsp rsr rss saa sac sae sak sal sap sar sas sca scc sce sck scl scp scr scs se- sea sec see sek sel sep ser ses sk- ska skc ske skk skl skp skr sks sla slc sle slk sll slp slr sls spa spc spe spk spl spp spr sps sr- sra src sre srk srl srp srr srs ss- ssa ssc sse ssk ssl ssp ssr sss