a-a a-b a-i a-t aaa aab aae aai aan aao aat ab- aba abb abe abi abn abo abt aea aeb aee aei aen aeo aet ai- aia aib aie aii ain aio ait an- ana anb ane ani ann ano ant aoa aob aoe aoi aon aoo aot at- ata atb ate ati atn ato att baa bab bae bai ban bao bat bba bbb bbe bbi bbn bbo bbt be- bea beb bee bei ben beo bet bi- bia bib bie bii bin bio bit bna bnb bne bni bnn bno bnt boa bob boe boi bon boo bot bta btb bte bti btn bto btt eaa eab eae eai ean eao eat eba ebb ebe ebi ebn ebo ebt eea eeb eee een eeo eet eia eib eie eii ein eio eit en- ena enb ene eni enn eno ent eo- eoa eob eoe eoi eon eoo eot eta etb ete eti etn eto ett ia- iaa iab iae iai ian iao iat iba ibb ibe ibi ibn ibo ibt ie- iea iee iei ien iet iia iib iie iii iin iio iit in- ina inb ine ini inn ino int io- ioa iob ioe ioi ion ioo iot ita itb ite iti itn ito itt n-i naa nab nae nai nan nao nat nba nbb nbe nbi nbn nbo nbt ne- nea neb nee nei nen neo net nia nib nie nii nin nio nit nna nnb nne nni nnn nno nnt no- noa nob noe noi non noo not nta ntb nte nti ntn nto ntt o-i oaa oab oae oai oan oao oat ob- oba obb obe obi obn obo obt oea oeb oee oei oen oeo oet oia oib oie oii oin oio oit on- ona onb one oni onn ono ont oo- ooa oob ooi oon ooo oot ot- ota otb ote oti otn oto ott taa tab tae tai tan tao tat tba tbb tbe tbi tbn tbo tbt te- tea teb tee tei ten teo tet tia tib tie tii tin tio tit tna tnb tne tni tnn tno tnt to- toa tob toe toi ton too tot tta ttb tte tti ttn tto ttt