-al a-a a-b a-i aaa aab aae aai aal aan aap aas ab- aba abb abe abi abl abn abp abs aea aeb aee aei ael aen aep aes ai- aia aib aie aii ail ain aip ais al- ala alb ale ali all aln alp als an- ana anb ane ani anl ann anp ans ap- apa apb ape api apl apn app aps as- asa asb ase asi asl asn asp ass b-p baa bab bae bai bal ban bap bas bba bbb bbe bbi bbl bbn bbp bbs be- bea beb bee bei bel ben bep bes bi- bia bib bie bii bil bin bip bis bla blb ble bli bll bln blp bls bna bnb bne bni bnl bnn bnp bns bpa bpb bpe bpi bpl bpn bpp bps bsa bsb bse bsi bsl bsn bsp bss eaa eab eae eai eal ean eap eas eba ebb ebe ebi ebl ebn ebp ebs eea eeb eee eel een eep ees eia eib eie eii eil ein eip eis ela elb ele eli ell eln elp els en- ena enb ene eni enl enn enp ens ep- epa epb epe epi epl epn epp eps es- esa esb ese esi esl esn esp ess ia- iaa iab iae iai ial ian iap ias iba ibb ibe ibi ibl ibn ibp ibs ie- iea iee iei iel ien iep ies iia iib iie iii iil iin iip iis il- ila ilb ile ili ill iln ilp ils in- ina inb ine ini inl inn inp ins ipa ipb ipe ipi ipl ipn ipp ips is- isa isb ise isi isl isn isp iss l-p la- laa lab lae lai lal lan lap las lba lbb lbe lbi lbl lbp lbs lea leb lee lei lel len lep les lia lib lie lii lil lin lip lis lla llb lle lli lll lln llp lls lna lnb lne lni lnl lnn lnp lns lpa lpb lpe lpi lpl lpn lpp lps lsa lsb lse lsi lsl lsn lsp lss n-i naa nab nae nai nal nan nap nas nba nbb nbe nbi nbl nbn nbp nbs ne- nea neb nee nei nel nen nep nes nia nib nie nii nil nin nip nis nla nlb nle nli nll nln nlp nls nna nnb nne nni nnl nnn nnp nns npa npb npe npi npl npn npp nps nsa nsb nse nsi nsl nsn nsp nss p-p paa pab pae pai pal pan pap pas pba pbb pbe pbi pbl pbn pbp pbs pea peb pee pei pel pen pep pes pia pib pie pii pil pin pip pis pla plb ple pli pll pln plp pls pn- pna pnb pne pni pnl pnn pnp pns ppa ppb ppe ppi ppl ppn ppp pps ps- psa psb pse psi psl psn psp pss saa sab sae sai sal san sap sas sba sbb sbe sbi sbl sbn sbp sbs se- sea seb see sei sel sen sep ses sia sib sie sii sil sin sip sis sla slb sle sli sll sln slp sls sna snb sne sni snl snn snp sns spa spb spe spi spl spn spp sps ss- ssa ssb sse ssi ssl ssn ssp sss