a-a a-b a-t a-z aaa aab aae aan aao aat aau aaz ab- aba abb abe abn abo abt abu abz aea aeb aee aen aeo aet aeu aez an- ana anb ane ann ano ant anu anz aoa aob aoe aon aoo aot aou at- ata atb ate atn ato att atu atz au- aua aub aue aun auo aut auz az- aza azb aze azn azo azt azu azz b-u baa bab bae ban bao bat bau baz bba bbb bbe bbn bbo bbt bbu be- bea beb bee ben beo bet beu bez bna bnb bne bnn bno bnt bnu bnz boa bob boe bon boo bot bou boz bta btb bte btn bto btt btu btz bua bub bue bun buo but buu buz bza bze bzn bzo bzu bzz eaa eab eae ean eao eat eau eaz eba ebb ebe ebn ebo ebt ebu eea eeb eee een eeo eet en- ena enb ene enn eno ent enu enz eo- eoa eob eoe eon eoo eot eou eta etb ete etn eto ett etu etz eu- eua eub eue eun eut eze ezo ezz naa nab nae nan nao nat nau naz nba nbb nbe nbn nbo nbt nbu ne- nea neb nee nen neo net neu nez nna nnb nne nnn nno nnt nnu nnz no- noa nob noe non noo not nou noz nta ntb nte ntn nto ntt ntu ntz nua nub nue nun nuo nut nuu nzb nze nzo nzz oaa oab oae oan oao oat oau ob- oba obb obe obn obo obt obu oea oeb oee oen oeo oet on- ona onb one onn ono ont onu oo- ooa oob oon ooo oot ot- ota otb ote otn oto ott otu otz ou- oua oue oun ouo out oza oze ozo ozt ozu ozz taa tab tae tan tao tat tau taz tba tbb tbe tbn tbo tbt tbu tbz te- tea teb tee ten teo tet teu tez tna tnb tne tnn tno tnt tnz to- toa tob toe ton too tot tou toz tta ttb tte ttn tto ttt ttu tua tub tue tun tuo tut tuu tuz tza tze tzu ua- uaa uab uae uan uao uat uau uaz uba ubb ube ubn ubo ubt ubu uea ueb uee uen uet un- una unb une unn uno unt unu uoa uob uoe uon uoo uot uta utb ute utn uto utt utu utz uua uue uun uut uuu uza uzb uzo uzu zaa zab zan zao zat zaz zbb zbt zea zeb zee zen zeo zet zez zne znn zno zo- zoa zob zoe zon zoo zot zou zta zte zub zun zut zuz zzt zzz