a-a a-b a-c a-t aaa aab aac aaj aan aao aat aau ab- aba abb abc abj abn abo abt abu ac- aca acb acc acj acn aco act acu aja ajb ajc ajj ajn ajo ajt aju an- ana anb anc anj ann ano ant anu aoa aob aoc aoj aon aoo aot aou at- ata atb atc atn ato att atu au- aua aub auc auj aun auo aut b-u baa bab bac baj ban bao bat bau bba bbb bbc bbn bbo bbt bbu bca bcb bcc bcj bcn bco bct bcu bja bjc bjj bjn bjt bju bna bnb bnc bnj bnn bno bnt bnu boa bob boc boj bon boo bot bou bta btb btc btn bto btt btu bua bub buc buj bun buo but buu c-- c-j caa cab cac caj can cao cat cau cba cbb cbc cbj cbn cbo cbt cbu cca ccb ccc ccj ccn cco cct ccu cja cjb cjc cn- cna cnb cnc cnj cnn cno cnt cnu co- coa cob coc coj con coo cot cou cta ctb ctc ctn cto ctt ctu cua cub cuc cun cuo cut cuu jaa jab jac jaj jan jao jat jau jba jbc jbj jbo jbt jbu jca jcb jcc jco jct jcu jja jjb jjc jjj jju jna jnc jnj jnn jno jnt jnu joa job joc joj jon joo jot jou jta jtb jtc jtn jtt jtu jub jun juo jut naa nab nac naj nan nao nat nau nba nbb nbc nbn nbo nbt nbu nca ncb ncc ncn nco nct ncu nja njc njn nju nna nnb nnc nnn nno nnt nnu no- noa nob noc noj non noo not nou nta ntb ntc ntn nto ntt ntu nua nub nuc nuj nun nuo nut nuu oaa oab oac oaj oan oao oat oau ob- oba obb obc obj obn obo obt obu oc- oca ocb occ ocj ocn oco oct ocu oja ojb ojc ojo oju on- ona onb onc onj onn ono ont onu oo- ooa oob ooc oon ooo oot ot- ota otb otc otn oto ott otu ou- oua ouc oun ouo out taa tab tac taj tan tao tat tau tba tbb tbc tbj tbn tbo tbt tbu tca tcb tcc tcj tcn tco tct tcu tjc tjo tju tna tnb tnc tnn tno tnt to- toa tob toc toj ton too tot tou tta ttb ttc ttn tto ttt ttu tua tub tuc tuj tun tuo tut tuu ua- uaa uab uac uaj uan uao uat uau uba ubb ubc ubn ubo ubt ubu uca ucb ucc ucj ucn uco uct ucu ujc ujo un- una unb unc unn uno unt unu uoa uob uoc uoj uon uoo uot uta utb utc utj utn uto utt utu uua uuc uun uut uuu