-al -ol a-a a-b a-i a-t aaa aab aaf aai aak aal aan aao aat ab- aba abb abf abi abk abl abn abo abt af- afa afb aff afi afk afl afn afo aft ai- aia aib aif aii aik ail ain aio ait aka akb aki akk akl akn ako al- ala alb alf ali alk all aln alo alt an- ana anb anf ani ank anl ann ano ant aoa aob aof aoi aok aol aon aoo aot at- ata atb atf ati atl atn ato att baa bab baf bai bak bal ban bao bat bba bbb bbf bbi bbk bbl bbn bbo bbt bfa bfb bff bfi bfl bfn bfo bft bi- bia bib bif bii bik bil bin bio bit bka bkb bkf bkk bkl bkn bko bkt bla blb blf bli blk bll bln blo blt bna bnb bnf bni bnk bnl bnn bno bnt boa bob bof boi bok bol bon boo bot bta btb btf bti btk btl btn bto btt faa fab faf fai fak fal fan fao fat fba fbb fbf fbi fbk fbl fbn fbo fbt ffa fff ffi ffk ffl ffn ffo fft fia fib fif fii fik fil fin fit fka fkb fkf fki fkk fkl fkt fla flb flf fli fll fln flo flt fna fnb fnf fni fnk fnl fnn fnt foa fob fof foi fok fol fon foo fot fta ftb ftf fti ftk ftl ftn fto ftt i-f ia- iaa iab iaf iai ial ian iao iat iba ibb ibf ibi ibk ibl ibn ibo ibt ifa ifb iff ifi ifl ifn ifo ift iia iib iif iii iil iin iio iit ika ikb ikf iki ikk ikl iko ikt il- ila ilb ilf ili ilk ill iln ilo ilt in- ina inb inf ini ink inl inn ino int io- ioa iob iof ioi iol ion ioo iot ita itb itf iti itk itl itn ito itt k-t ka- kaa kab kaf kai kak kal kan kao kat kba kbb kbf kbi kbk kbl kbn kbo kfa kff kfi kfo kia kib kif kii kik kil kin kio kit kkb kki kkk kkl kkn kkt kl- kla klb klf kli klo klt kn- kna knf kni knk knl knn kno knt koa kob kof koi kok kol kon koo kot kta ktb ktf ktk ktl ktn kto ktt la- laa lab laf lai lak lal lan lao lat lba lbb lbf lbi lbk lbl lbo lbt lfa lfb lff lfi lfk lfl lfn lfo lft lia lib lif lii lik lil lin lio lit lka lkb lkl lkt lla llb llf lli llk lll lln llo llt lna lnb lni lnk lnl lnn lno lnt loa lob lof loi lok lol lon loo lot lta ltb ltf lti ltk ltl lto ltt n-i naa nab naf nai nak nal nan nao nat nba nbb nbf nbi nbk nbl nbn nbo nbt nfa nfb nff nfi nfk nfl nfn nfo nft nia nib nif nii nik nil nin nio nit nka nkf nki nkk nkn nko nkt nla nlb nlf nli nlk nll nln nlo nlt nna nnb nnf nni nnk nnl nnn nno nnt no- noa nob nof noi nok nol non noo not nta ntb ntf nti ntk ntn nto ntt o-i oaa oab oaf oai oak oal oan oao oat ob- oba obb obf obi obk obl obn obo obt of- ofa ofb off ofi ofl ofn ofo oft oia oib oif oii oik oil oin oio oit oka okb oki okk okl oko ola olb olf oli olk oll oln olo olt on- ona onb onf oni onk onl onn ono ont oo- ooa oob oof ooi ook ool oon ooo oot ot- ota otb otf oti otk otl otn oto ott taa tab taf tai tak tal tan tao tat tba tbb tbf tbi tbk tbl tbn tbo tbt tfa tfb tff tfi tfk tfl tfn tfo tft tia tib tif tii tik til tin tio tit tka tkb tkk tkl tko tkt tla tlf tli tlk tll tln tlo tlt tna tnb tnf tni tnk tnl tnn tno tnt to- toa tob tof toi tok tol ton too tot tta ttb ttf tti ttk ttl ttn tto ttt