-al a-a a-b a-i aaa aab aai aak aal aan aap ab- aba abb abi abk abl abn abp ai- aia aib aii aik ail ain aip aka akb aki akk akl akn akp al- ala alb ali alk all aln alp an- ana anb ani ank anl ann anp ap- apa apb api apk apl apn app b-p baa bab bai bak bal ban bap bba bbb bbi bbk bbl bbn bbp bi- bia bib bii bik bil bin bip bka bkb bkk bkl bkn bkp bla blb bli blk bll bln blp bna bnb bni bnk bnl bnn bnp bpa bpb bpi bpl bpn bpp ia- iaa iab iai ial ian iap iba ibb ibi ibk ibl ibn ibp iia iib iii iil iin iip ika ikb iki ikk ikl il- ila ilb ili ilk ill iln ilp in- ina inb ini ink inl inn inp ipa ipb ipi ipl ipn ipp ka- kaa kab kai kak kal kan kap kba kbb kbi kbk kbl kbn kbp kia kib kii kik kil kin kip kkb kki kkk kkl kkn kkp kl- kla klb kli kn- kna kni knk knl knn knp kpa kpi kpk kpl kpn kpp l-p la- laa lab lai lak lal lan lap lba lbb lbi lbk lbl lbp lia lib lii lik lil lin lip lka lkb lkl lkp lla llb lli llk lll lln llp lna lnb lni lnk lnl lnn lnp lpa lpb lpi lpk lpl lpn lpp n-i naa nab nai nak nal nan nap nba nbb nbi nbk nbl nbn nbp nia nib nii nik nil nin nip nka nki nkk nkn nkp nla nlb nli nlk nll nln nlp nna nnb nni nnk nnl nnn nnp npa npb npi npl npn npp p-p paa pab pai pak pal pan pap pba pbb pbi pbk pbl pbn pbp pia pib pii pik pil pin pip pka pkb pki pkl pkn pkp pla plb pli plk pll pln plp pn- pna pnb pni pnk pnl pnn pnp ppa ppb ppi ppk ppl ppn ppp