-al a-a a-b a-i aaa aab aae aaf aai aak aal aan ab- aba abb abe abf abi abk abl abn aea aeb aee aef aei aek ael aen af- afa afb afe aff afi afk afl afn ai- aia aib aie aif aii aik ail ain aka akb ake aki akk akl akn al- ala alb ale alf ali alk all aln an- ana anb ane anf ani ank anl ann baa bab bae baf bai bak bal ban bba bbb bbe bbf bbi bbk bbl bbn be- bea beb bee bef bei bek bel ben bfa bfb bfe bff bfi bfl bfn bi- bia bib bie bif bii bik bil bin bka bkb bke bkf bkk bkl bkn bla blb ble blf bli blk bll bln bna bnb bne bnf bni bnk bnl bnn eaa eab eae eaf eai eak eal ean eba ebb ebe ebf ebi ebk ebl ebn eea eeb eee eef eek eel een ef- efa efb efe eff efi efl eia eib eie eif eii eik eil ein eka ekb eke ekf eki ekl ela elb ele elf eli elk ell eln en- ena enb ene enf eni enk enl enn faa fab fae faf fai fak fal fan fba fbb fbe fbf fbi fbk fbl fbn fea feb fee fef fei fek fel fen ffa ffe fff ffi ffk ffl ffn fia fib fie fif fii fik fil fin fka fkb fkf fki fkk fkl fla flb fle flf fli fll fln fna fnb fne fnf fni fnk fnl fnn i-f ia- iaa iab iae iaf iai ial ian iba ibb ibe ibf ibi ibk ibl ibn ie- iea iee ief iei iek iel ien ifa ifb ife iff ifi ifl ifn iia iib iie iif iii iil iin ika ikb ike ikf iki ikk ikl il- ila ilb ile ilf ili ilk ill iln in- ina inb ine inf ini ink inl inn ka- kaa kab kae kaf kai kak kal kan kba kbb kbe kbf kbi kbk kbl kbn ke- kea keb kee kef kei kek kel ken kfa kff kfi kia kib kie kif kii kik kil kin kkb kke kki kkk kkl kkn kl- kla klb klf kli kn- kna kne knf kni knk knl knn la- laa lab lae laf lai lak lal lan lba lbb lbe lbf lbi lbk lbl lea leb lee lef lei lek lel len lfa lfb lfe lff lfi lfk lfl lfn lia lib lie lif lii lik lil lin lka lkb lkl lla llb lle llf lli llk lll lln lna lnb lne lni lnk lnl lnn n-i naa nab nae naf nai nak nal nan nba nbb nbe nbf nbi nbk nbl nbn ne- nea neb nee nef nei nek nel nen nfa nfb nfe nff nfi nfk nfl nfn nia nib nie nif nii nik nil nin nka nke nkf nki nkk nkn nla nlb nle nlf nli nlk nll nln nna nnb nne nnf nni nnk nnl nnn