-al a-a a-c a-t aaa aac aae aal aap aas aat ac- aca acc ace acl acp acs act aea aec aee ael aep aes aet al- ala alc ale all alp als alt ap- apa apc ape apl app aps apt as- asa asc ase asl asp ass ast at- ata atc ate atl atp ats att c-- caa cac cae cal cap cas cat cca ccc cce ccl ccp ccs cct ce- cea cec cee cel cep ces cet cl- cla clc cle cll clp cls clt cpa cpc cpe cpl cpp cps cpt csa csc cse csl csp css cst cta ctc cte ctl ctp cts ctt eaa eac eae eal eap eas eat ec- eca ecc ece ecl ecs ect eea eec eee eel eep ees eet ela elc ele ell elp els elt ep- epa epc epe epl epp eps ept es- esa esc ese esl esp ess est eta etc ete etl etp ets ett l-p la- laa lac lae lal lap las lat lca lcc lce lcl lcp lcs lct lea lec lee lel lep les let lla llc lle lll llp lls llt lpa lpc lpe lpl lpp lps lpt lsa lsc lse lsl lsp lss lst lta ltc lte ltl ltp lts ltt p-p paa pac pae pal pap pas pat pca pcc pce pcl pcp pcs pct pea pec pee pel pep pes pet pla plc ple pll plp pls plt ppa ppc ppe ppl ppp pps ppt ps- psa psc pse psl psp pss pst pt- pta ptc pte ptl ptp pts ptt saa sac sae sal sap sas sat sca scc sce scl scp scs sct se- sea sec see sel sep ses set sla slc sle sll slp sls slt spa spc spe spl spp sps spt ss- ssa ssc sse ssl ssp sss sst sta stc ste stl stp sts stt taa tac tae tal tap tas tat tca tcc tce tcl tcp tcs tct te- tea tec tee tel tep tes tet tla tlc tle tll tlp tls tlt tpa tpc tpe tpl tpp tps tpt tsa tsc tse tsl tsp tss tst tta ttc tte ttl ttp tts ttt