a-a a-b a-i a-t aaa aab aad aai aan aao aat aax ab- aba abb abd abi abn abo abt abx ad- ada adb add adi adn ado adt adx ai- aia aib aid aii ain aio ait aix an- ana anb and ani ann ano ant anx aoa aob aod aoi aon aoo aot aox at- ata atb atd ati atn ato att atx ax- axa axi axn axo axt axx baa bab bad bai ban bao bat bax bba bbb bbd bbi bbn bbo bbt bbx bda bdb bdd bdi bdo bdt bdx bi- bia bib bid bii bin bio bit bix bna bnb bnd bni bnn bno bnt bnx boa bob bod boi bon boo bot box bta btb btd bti btn bto btt btx bxb bxd bxi bxn bxo bxx daa dab dad dai dan dao dat dax dba dbb dbd dbi dbn dbo dbt dbx dda ddb ddd ddi ddn ddo ddt ddx di- dia dib did dii din dio dit dix dna dnb dnd dni dnn dno dnt doa dob dod doi don doo dot dox dta dtb dtd dti dtn dto dtt dtx dxd dxi dxn dxo dxt dxx i-d ia- iaa iab iad iai ian iao iat iba ibb ibd ibi ibn ibo ibt ibx ida idb idd idi idn ido idt idx iia iib iid iii iin iio iit iix in- ina inb ind ini inn ino int inx io- ioa iob iod ioi ion ioo iot ita itb itd iti itn ito itt itx ixi ixn n-i naa nab nad nai nan nao nat nax nba nbb nbd nbi nbn nbo nbt nbx nda ndb ndd ndi ndn ndo ndt nia nib nid nii nin nio nit nix nna nnb nni nnn nno nnt no- noa nob nod noi non noo not nox nta ntb ntd nti ntn nto ntt ntx nxd nxt o-i oaa oab oad oai oan oao oat oax ob- oba obb obd obi obn obo obt obx oda odb odd odi odn odo odt oia oib oid oii oin oio oit on- ona onb ond oni onn ono ont onx oo- ooa oob ood ooi oon ooo oot oox ot- ota otb otd oti otn oto ott ox- oxa oxb oxi oxn oxo oxt oxx t-x taa tab tad tai tan tao tat tax tba tbb tbd tbi tbn tbo tbt tda tdb tdd tdi tdn tdo tdt tdx tia tib tid tii tin tio tit tix tna tnb tnd tni tnn tno tnt tnx to- toa tob tod toi ton too tot tox tta ttb ttd tti ttn tto ttt ttx txi txn txt xaa xad xan xat xbx xda xdb xdi xdt xia xii xin xio xit xix xna xno xoa xod xoi xon xoo xot xox xti xtx xxi xxo xxx