-al a-a a-b a-t aaa aab aae aal aan aap aas aat ab- aba abb abe abl abn abp abs abt aea aeb aee ael aen aep aes aet al- ala alb ale all aln alp als alt an- ana anb ane anl ann anp ans ant ap- apa apb ape apl apn app aps apt as- asa asb ase asl asn asp ass ast at- ata atb ate atl atn atp ats att b-p baa bab bae bal ban bap bas bat bba bbb bbe bbl bbn bbp bbs bbt be- bea beb bee bel ben bep bes bet bla blb ble bll bln blp bls blt bna bnb bne bnl bnn bnp bns bnt bpa bpb bpe bpl bpn bpp bps bpt bsa bsb bse bsl bsn bsp bss bst bta btb bte btl btn btp bts btt eaa eab eae eal ean eap eas eat eba ebb ebe ebl ebn ebp ebs ebt eea eeb eee eel een eep ees eet ela elb ele ell eln elp els elt en- ena enb ene enl enn enp ens ent ep- epa epb epe epl epn epp eps ept es- esa esb ese esl esn esp ess est eta etb ete etl etn etp ets ett l-p la- laa lab lae lal lan lap las lat lba lbb lbe lbl lbp lbs lbt lea leb lee lel len lep les let lla llb lle lll lln llp lls llt lna lnb lne lnl lnn lnp lns lnt lpa lpb lpe lpl lpn lpp lps lpt lsa lsb lse lsl lsn lsp lss lst lta ltb lte ltl ltp lts ltt naa nab nae nal nan nap nas nat nba nbb nbe nbl nbn nbp nbs nbt ne- nea neb nee nel nen nep nes net nla nlb nle nll nln nlp nls nlt nna nnb nne nnl nnn nnp nns nnt npa npb npe npl npn npp nps npt nsa nsb nse nsl nsn nsp nss nst nta ntb nte ntn ntp nts ntt p-p paa pab pae pal pan pap pas pat pba pbb pbe pbl pbn pbp pbs pbt pea peb pee pel pen pep pes pet pla plb ple pll pln plp pls plt pn- pna pnb pne pnl pnn pnp pns pnt ppa ppb ppe ppl ppn ppp pps ppt ps- psa psb pse psl psn psp pss pst pt- pta ptb pte ptl ptn ptp pts ptt saa sab sae sal san sap sas sat sba sbb sbe sbl sbn sbp sbs sbt se- sea seb see sel sen sep ses set sla slb sle sll sln slp sls slt sna snb sne snl snn snp sns snt spa spb spe spl spn spp sps spt ss- ssa ssb sse ssl ssn ssp sss sst sta stb ste stl stn stp sts stt taa tab tae tal tan tap tas tat tba tbb tbe tbl tbn tbp tbs tbt te- tea teb tee tel ten tep tes tet tla tle tll tln tlp tls tlt tna tnb tne tnl tnn tnp tns tnt tpa tpb tpe tpl tpn tpp tps tpt tsa tsb tse tsl tsn tsp tss tst tta ttb tte ttl ttn ttp tts ttt