-al a-a a-b a-i aaa aab aaf aag aai aal aan ab- aba abb abf abg abi abl abn af- afa afb aff afg afi afl afn ag- aga agb agf agg agi agl agn ai- aia aib aif aig aii ail ain al- ala alb alf alg ali all aln an- ana anb anf ang ani anl ann baa bab baf bag bai bal ban bba bbb bbf bbg bbi bbl bbn bfa bfb bff bfg bfi bfl bfn bga bgb bgf bgg bgi bgl bgn bi- bia bib bif big bii bil bin bla blb blf blg bli bll bln bna bnb bnf bng bni bnl bnn faa fab faf fag fai fal fan fba fbb fbf fbg fbi fbl fbn ffa fff ffg ffi ffl ffn fga fgb fgf fgg fgi fgl fgn fia fib fif fig fii fil fin fla flb flf flg fli fll fln fna fnb fnf fng fni fnl fnn gaa gab gaf gag gai gal gan gba gbf gbg gbi gbl gbn gfa gfb gff gfi gfl gga ggb ggg ggi ggn gia gib gif gig gii gil gin gla glb glf glg gli gll gln gna gnb gnf gni gnl gnn i-f ia- iaa iab iaf iag iai ial ian iba ibb ibf ibg ibi ibl ibn ifa ifb iff ifg ifi ifl ifn iga igb igf igg igi igl ign iia iib iif iii iil iin il- ila ilb ilf ilg ili ill iln in- ina inb inf ing ini inl inn la- laa lab laf lag lai lal lan lba lbb lbf lbg lbi lbl lfa lfb lff lfg lfi lfl lfn lga lgb lgf lgg lgi lgl lgn lia lib lif lig lii lil lin lla llb llf llg lli lll lln lna lnb lng lni lnl lnn n-i naa nab naf nag nai nal nan nba nbb nbf nbg nbi nbl nbn nfa nfb nff nfi nfl nfn nga ngb ngf ngg ngi ngl ngn nia nib nif nig nii nil nin nla nlb nlf nlg nli nll nln nna nnb nnf nng nni nnl nnn