a-a a-t aaa aad aan aao aat aax ad- ada add adn ado adt adx an- ana and ann ano ant anx aoa aod aon aoo aot aox at- ata atd atn ato att atx ax- axa axn axo axt axx daa dad dan dao dat dax dda ddd ddn ddo ddt ddx dna dnd dnn dno dnt doa dod don doo dot dox dta dtd dtn dto dtt dtx dxd dxn dxo dxt dxx naa nad nan nao nat nax nda ndd ndn ndo ndt nna nnn nno nnt no- noa nod non noo not nox nta ntd ntn nto ntt ntx nxd nxt oaa oad oan oao oat oax oda odd odn odo odt on- ona ond onn ono ont onx oo- ooa ood oon ooo oot oox ot- ota otd otn oto ott ox- oxa oxn oxo oxt oxx t-x taa tad tan tao tat tax tda tdd tdn tdo tdt tdx tna tnd tnn tno tnt tnx to- toa tod ton too tot tox tta ttd ttn tto ttt ttx txn txt xaa xad xan xat xda xdt xna xno xoa xod xon xoo xot xox xtx xxo xxx