a-a a-b a-i a-t aaa aab aad aai aak aan aao aat ab- aba abb abd abi abk abn abo abt ad- ada adb add adi adk adn ado adt ai- aia aib aid aii aik ain aio ait aka akb akd aki akk akn ako an- ana anb and ani ank ann ano ant aoa aob aod aoi aok aon aoo aot at- ata atb atd ati atn ato att baa bab bad bai bak ban bao bat bba bbb bbd bbi bbk bbn bbo bbt bda bdb bdd bdi bdk bdo bdt bi- bia bib bid bii bik bin bio bit bka bkb bkk bkn bko bkt bna bnb bnd bni bnk bnn bno bnt boa bob bod boi bok bon boo bot bta btb btd bti btk btn bto btt daa dab dad dai dak dan dao dat dba dbb dbd dbi dbk dbn dbo dbt dda ddb ddd ddi ddk ddn ddo ddt di- dia dib did dii dik din dio dit dka dkb dki dkk dko dkt dna dnb dnd dni dnk dnn dno dnt doa dob dod doi dok don doo dot dta dtb dtd dti dtk dtn dto dtt i-d ia- iaa iab iad iai ian iao iat iba ibb ibd ibi ibk ibn ibo ibt ida idb idd idi idk idn ido idt iia iib iid iii iin iio iit ika ikb iki ikk iko ikt in- ina inb ind ini ink inn ino int io- ioa iob iod ioi ion ioo iot ita itb itd iti itk itn ito itt k-t ka- kaa kab kad kai kak kan kao kat kba kbb kbd kbi kbk kbn kbo kda kdb kdk kdo kdt kia kib kid kii kik kin kio kit kkb kki kkk kkn kkt kn- kna knd kni knk knn kno knt koa kob kod koi kok kon koo kot kta ktb ktk ktn kto ktt n-i naa nab nad nai nak nan nao nat nba nbb nbd nbi nbk nbn nbo nbt nda ndb ndd ndi ndk ndn ndo ndt nia nib nid nii nik nin nio nit nka nki nkk nkn nko nkt nna nnb nni nnk nnn nno nnt no- noa nob nod noi nok non noo not nta ntb ntd nti ntk ntn nto ntt o-i oaa oab oad oai oak oan oao oat ob- oba obb obd obi obk obn obo obt oda odb odd odi odn odo odt oia oib oid oii oik oin oio oit oka okb okd oki okk oko on- ona onb ond oni onk onn ono ont oo- ooa oob ood ooi ook oon ooo oot ot- ota otb otd oti otk otn oto ott taa tab tad tai tak tan tao tat tba tbb tbd tbi tbk tbn tbo tbt tda tdb tdd tdi tdk tdn tdo tdt tia tib tid tii tik tin tio tit tka tkb tkk tko tkt tna tnb tnd tni tnk tnn tno tnt to- toa tob tod toi tok ton too tot tta ttb ttd tti ttk ttn tto ttt