a-a a-b a-i a-t aaa aab aai aak aam aan aao aat ab- aba abb abi abk abm abn abo abt ai- aia aib aii aik aim ain aio ait aka akb aki akk akm akn ako ama amb ami amk amm amn amo amt an- ana anb ani ank anm ann ano ant aoa aob aoi aok aom aon aoo aot at- ata atb ati atm atn ato att baa bab bai bak bam ban bao bat bba bbb bbi bbk bbm bbn bbo bbt bi- bia bib bii bik bim bin bio bit bka bkb bkk bkm bkn bko bkt bma bmb bmi bmk bmm bmn bmo bmt bna bnb bni bnk bnn bno bnt boa bob boi bok bom bon boo bot bta btb bti btk btm btn bto btt ia- iaa iab iai iam ian iao iat iba ibb ibi ibk ibm ibn ibo ibt iia iib iii iim iin iio iit ika ikb iki ikk iko ikt im- ima imb imi imm imn imo imt in- ina inb ini ink inm inn ino int io- ioa iob ioi iom ion ioo iot ita itb iti itk itm itn ito itt k-t ka- kaa kab kai kak kam kan kao kat kba kbb kbi kbk kbm kbn kbo kia kib kii kik kim kin kio kit kkb kki kkk kkm kkn kkt kma kmb kmi kmk kmm kmo kmt kn- kna kni knk knm knn kno knt koa kob koi kok kom kon koo kot kta ktb ktk ktm ktn kto ktt m-o maa mab mai mak mam man mao mat mba mbb mbi mbk mbm mbo mbt mi- mia mib mii mik mim min mio mit mka mkb mkk mkm mkn mko mkt mma mmb mmi mmk mmm mmn mmo mmt mna mnb mni mnk mnm mnn mno mnt moa mob moi mok mom mon moo mot mta mtb mti mtk mtm mtn mto mtt n-i naa nab nai nak nam nan nao nat nba nbb nbi nbk nbm nbn nbo nbt nia nib nii nik nim nin nio nit nka nki nkk nkm nkn nko nkt nma nmb nmi nmk nmm nmn nmo nmt nna nnb nni nnk nnm nnn nno nnt no- noa nob noi nok nom non noo not nta ntb nti ntk ntm ntn nto ntt o-i oaa oab oai oak oam oan oao oat ob- oba obb obi obk obm obn obo obt oia oib oii oik oim oin oio oit oka okb oki okk oko om- oma omb omi omm omn omo omt on- ona onb oni onk onn ono ont oo- ooa oob ooi ook oom oon ooo oot ot- ota otb oti otk otm otn oto ott taa tab tai tak tam tan tao tat tba tbb tbi tbk tbm tbn tbo tbt tia tib tii tik tim tin tio tit tka tkb tkk tkm tko tkt tma tmb tmi tmk tmm tmn tmo tmt tna tnb tni tnk tnm tnn tno tnt to- toa tob toi tok tom ton too tot tta ttb tti ttk ttm ttn tto ttt