-al -ol a-a a-b a-i a-t aaa aab aaf aag aai aal aan aao aat ab- aba abb abf abg abi abl abn abo abt af- afa afb aff afg afi afl afn afo aft ag- aga agb agf agg agi agl agn ago agt ai- aia aib aif aig aii ail ain aio ait al- ala alb alf alg ali all aln alo alt an- ana anb anf ang ani anl ann ano ant aoa aob aof aog aoi aol aon aoo aot at- ata atb atf atg ati atl atn ato att baa bab baf bag bai bal ban bao bat bba bbb bbf bbg bbi bbl bbn bbo bbt bfa bfb bff bfg bfi bfl bfn bfo bft bga bgb bgf bgg bgi bgl bgn bgo bgt bi- bia bib bif big bii bil bin bio bit bla blb blf blg bli bll bln blo blt bna bnb bnf bng bni bnl bnn bno bnt boa bob bof bog boi bol bon boo bot bta btb btf btg bti btl btn bto btt faa fab faf fag fai fal fan fao fat fba fbb fbf fbg fbi fbl fbn fbo fbt ffa fff ffg ffi ffl ffn ffo fft fga fgb fgf fgg fgi fgl fgn fgt fia fib fif fig fii fil fin fit fla flb flf flg fli fll fln flo flt fna fnb fnf fng fni fnl fnn fnt foa fob fof fog foi fol fon foo fot fta ftb ftf ftg fti ftl ftn fto ftt gaa gab gaf gag gai gal gan gao gat gba gbf gbg gbi gbl gbn gbo gbt gfa gfb gff gfi gfl gfo gft gga ggb ggg ggi ggn ggo ggt gia gib gif gig gii gil gin gio git gla glb glf glg gli gll gln glo glt gna gnb gnf gni gnl gnn gno gnt goa gob gof gog goi gol gon goo got gta gtb gtf gtg gti gtl gtn gto gtt i-f ia- iaa iab iaf iag iai ial ian iao iat iba ibb ibf ibg ibi ibl ibn ibo ibt ifa ifb iff ifg ifi ifl ifn ifo ift iga igb igf igg igi igl ign igo igt iia iib iif iii iil iin iio iit il- ila ilb ilf ilg ili ill iln ilo ilt in- ina inb inf ing ini inl inn ino int io- ioa iob iof iog ioi iol ion ioo iot ita itb itf itg iti itl itn ito itt la- laa lab laf lag lai lal lan lao lat lba lbb lbf lbg lbi lbl lbo lbt lfa lfb lff lfg lfi lfl lfn lfo lft lga lgb lgf lgg lgi lgl lgn lgo lgt lia lib lif lig lii lil lin lio lit lla llb llf llg lli lll lln llo llt lna lnb lng lni lnl lnn lno lnt loa lob lof log loi lol lon loo lot lta ltb ltf ltg lti ltl lto ltt n-i naa nab naf nag nai nal nan nao nat nba nbb nbf nbg nbi nbl nbn nbo nbt nfa nfb nff nfi nfl nfn nfo nft nga ngb ngf ngg ngi ngl ngn ngo ngt nia nib nif nig nii nil nin nio nit nla nlb nlf nlg nli nll nln nlo nlt nna nnb nnf nng nni nnl nnn nno nnt no- noa nob nof nog noi nol non noo not nta ntb ntf ntg nti ntn nto ntt o-i oaa oab oaf oag oai oal oan oao oat ob- oba obb obf obg obi obl obn obo obt of- ofa ofb off ofg ofi ofl ofn ofo oft oga ogf ogg ogi ogl ogn ogo ogt oia oib oif oii oil oin oio oit ola olb olf olg oli oll oln olo olt on- ona onb onf ong oni onl onn ono ont oo- ooa oob oof oog ooi ool oon ooo oot ot- ota otb otf otg oti otl otn oto ott taa tab taf tag tai tal tan tao tat tba tbb tbf tbg tbi tbl tbn tbo tbt tfa tfb tff tfg tfi tfl tfn tfo tft tga tgb tgf tgg tgi tgl tgn tgo tgt tia tib tif tig tii til tin tio tit tla tlf tlg tli tll tln tlo tlt tna tnb tnf tng tni tnl tnn tno tnt to- toa tob tof tog toi tol ton too tot tta ttb ttf ttg tti ttl ttn tto ttt