a-a a-b a-i aaa aab aaf aag aai aan aas aay ab- aba abb abf abg abi abn abs aby af- afa afb aff afg afi afn afs afy ag- aga agb agf agg agi agn ags agy ai- aia aib aif aig aii ain ais aiy an- ana anb anf ang ani ann ans any as- asa asb asf asg asi asn ass asy ay- aya ayf ayi ayn ays baa bab baf bag bai ban bas bay bba bbb bbf bbg bbi bbn bbs bby bfa bfb bff bfg bfi bfn bfs bfy bga bgb bgf bgg bgi bgn bgs bi- bia bib bif big bii bin bis biy bna bnb bnf bng bni bnn bns bsa bsb bsf bsg bsi bsn bss bsy by- bya byf byg byi byn bys faa fab faf fag fai fan fas fay fba fbb fbf fbg fbi fbn fbs ffa fff ffg ffi ffn ffs ffy fga fgb fgf fgg fgi fgn fgs fia fib fif fig fii fin fis fna fnb fnf fng fni fnn fns fsa fsb fsf fsg fsi fsn fss fy- fya fyb fyi fyn gaa gab gaf gag gai gan gas gay gba gbf gbg gbi gbn gbs gby gfa gfb gff gfi gfs gfy gga ggb ggg ggi ggn ggs gia gib gif gig gii gin gis giy gna gnb gnf gni gnn gns gsa gsb gsf gsg gsi gsn gss gy- gya gyb gyf gyn gys i-f ia- iaa iab iaf iag iai ian ias iba ibb ibf ibg ibi ibn ibs iby ifa ifb iff ifg ifi ifn ifs ify iga igb igf igg igi ign igs igy iia iib iif iii iin iis in- ina inb inf ing ini inn ins iny is- isa isb isf isg isi isn iss isy iya iys iyy n-i naa nab naf nag nai nan nas nay nba nbb nbf nbg nbi nbn nbs nfa nfb nff nfi nfn nfs nga ngb ngf ngg ngi ngn ngs nia nib nif nig nii nin nis nna nnb nnf nng nni nnn nns nsa nsb nsf nsg nsi nsn nss nsy nya nyf nyg nyn nys nyy saa sab saf sag sai san sas say sba sbb sbf sbg sbi sbn sbs sby sfa sfb sff sfg sfi sfn sfs sga sgb sgf sgg sgi sgn sgs sia sib sif sig sii sin sis sna snb snf sng sni snn sns sny ss- ssa ssb ssf ssg ssi ssn sss sy- sya syb syg syi syn sys yaa yab yaf yag yai yan yas yay ybf ybg ybi ybs yby yfa yff yfs yga yif yig yii yin yis yna yng ynn yns yny ysa ysb ysg ysi yss ysy yyb yyf yyg yys yyy