-al -ol a-a a-b a-i a-t aaa aab aaf aai aal aan aao aat ab- aba abb abf abi abl abn abo abt af- afa afb aff afi afl afn afo aft ai- aia aib aif aii ail ain aio ait al- ala alb alf ali all aln alo alt an- ana anb anf ani anl ann ano ant aoa aob aof aoi aol aon aoo aot at- ata atb atf ati atl atn ato att baa bab baf bai bal ban bao bat bba bbb bbf bbi bbl bbn bbo bbt bfa bfb bff bfi bfl bfn bfo bft bi- bia bib bif bii bil bin bio bit bla blb blf bli bll bln blo blt bna bnb bnf bni bnl bnn bno bnt boa bob bof boi bol bon boo bot bta btb btf bti btl btn bto btt faa fab faf fai fal fan fao fat fba fbb fbf fbi fbl fbn fbo fbt ffa fff ffi ffl ffn ffo fft fia fib fif fii fil fin fit fla flb flf fli fll fln flo flt fna fnb fnf fni fnl fnn fnt foa fob fof foi fol fon foo fot fta ftb ftf fti ftl ftn fto ftt i-f ia- iaa iab iaf iai ial ian iao iat iba ibb ibf ibi ibl ibn ibo ibt ifa ifb iff ifi ifl ifn ifo ift iia iib iif iii iil iin iio iit il- ila ilb ilf ili ill iln ilo ilt in- ina inb inf ini inl inn ino int io- ioa iob iof ioi iol ion ioo iot ita itb itf iti itl itn ito itt la- laa lab laf lai lal lan lao lat lba lbb lbf lbi lbl lbo lbt lfa lfb lff lfi lfl lfn lfo lft lia lib lif lii lil lin lio lit lla llb llf lli lll lln llo llt lna lnb lni lnl lnn lno lnt loa lob lof loi lol lon loo lot lta ltb ltf lti ltl lto ltt n-i naa nab naf nai nal nan nao nat nba nbb nbf nbi nbl nbn nbo nbt nfa nfb nff nfi nfl nfn nfo nft nia nib nif nii nil nin nio nit nla nlb nlf nli nll nln nlo nlt nna nnb nnf nni nnl nnn nno nnt no- noa nob nof noi nol non noo not nta ntb ntf nti ntn nto ntt o-i oaa oab oaf oai oal oan oao oat ob- oba obb obf obi obl obn obo obt of- ofa ofb off ofi ofl ofn ofo oft oia oib oif oii oil oin oio oit ola olb olf oli oll oln olo olt on- ona onb onf oni onl onn ono ont oo- ooa oob oof ooi ool oon ooo oot ot- ota otb otf oti otl otn oto ott taa tab taf tai tal tan tao tat tba tbb tbf tbi tbl tbn tbo tbt tfa tfb tff tfi tfl tfn tfo tft tia tib tif tii til tin tio tit tla tlf tli tll tln tlo tlt tna tnb tnf tni tnl tnn tno tnt to- toa tob tof toi tol ton too tot tta ttb ttf tti ttl ttn tto ttt