-al a-a a-b a-i aaa aab aae aai aal aan aap ab- aba abb abe abi abl abn abp aea aeb aee aei ael aen aep ai- aia aib aie aii ail ain aip al- ala alb ale ali all aln alp an- ana anb ane ani anl ann anp ap- apa apb ape api apl apn app b-p baa bab bae bai bal ban bap bba bbb bbe bbi bbl bbn bbp be- bea beb bee bei bel ben bep bi- bia bib bie bii bil bin bip bla blb ble bli bll bln blp bna bnb bne bni bnl bnn bnp bpa bpb bpe bpi bpl bpn bpp eaa eab eae eai eal ean eap eba ebb ebe ebi ebl ebn ebp eea eeb eee eel een eep eia eib eie eii eil ein eip ela elb ele eli ell eln elp en- ena enb ene eni enl enn enp ep- epa epb epe epi epl epn epp ia- iaa iab iae iai ial ian iap iba ibb ibe ibi ibl ibn ibp ie- iea iee iei iel ien iep iia iib iie iii iil iin iip il- ila ilb ile ili ill iln ilp in- ina inb ine ini inl inn inp ipa ipb ipe ipi ipl ipn ipp l-p la- laa lab lae lai lal lan lap lba lbb lbe lbi lbl lbp lea leb lee lei lel len lep lia lib lie lii lil lin lip lla llb lle lli lll lln llp lna lnb lne lni lnl lnn lnp lpa lpb lpe lpi lpl lpn lpp n-i naa nab nae nai nal nan nap nba nbb nbe nbi nbl nbn nbp ne- nea neb nee nei nel nen nep nia nib nie nii nil nin nip nla nlb nle nli nll nln nlp nna nnb nne nni nnl nnn nnp npa npb npe npi npl npn npp p-p paa pab pae pai pal pan pap pba pbb pbe pbi pbl pbn pbp pea peb pee pei pel pen pep pia pib pie pii pil pin pip pla plb ple pli pll pln plp pn- pna pnb pne pni pnl pnn pnp ppa ppb ppe ppi ppl ppn ppp