-al a-a a-b a-i aaa aab aai aal aan aap ab- aba abb abi abl abn abp ai- aia aib aii ail ain aip al- ala alb ali all aln alp an- ana anb ani anl ann anp ap- apa apb api apl apn app b-p baa bab bai bal ban bap bba bbb bbi bbl bbn bbp bi- bia bib bii bil bin bip bla blb bli bll bln blp bna bnb bni bnl bnn bnp bpa bpb bpi bpl bpn bpp ia- iaa iab iai ial ian iap iba ibb ibi ibl ibn ibp iia iib iii iil iin iip il- ila ilb ili ill iln ilp in- ina inb ini inl inn inp ipa ipb ipi ipl ipn ipp l-p la- laa lab lai lal lan lap lba lbb lbi lbl lbp lia lib lii lil lin lip lla llb lli lll lln llp lna lnb lni lnl lnn lnp lpa lpb lpi lpl lpn lpp n-i naa nab nai nal nan nap nba nbb nbi nbl nbn nbp nia nib nii nil nin nip nla nlb nli nll nln nlp nna nnb nni nnl nnn nnp npa npb npi npl npn npp p-p paa pab pai pal pan pap pba pbb pbi pbl pbn pbp pia pib pii pil pin pip pla plb pli pll pln plp pn- pna pnb pni pnl pnn pnp ppa ppb ppi ppl ppn ppp