-- your code goes here
local a = 
{
["oi"] = {sim=1, nao=2},
["tchau"] = {sim=2, nao=1}
}
local falas = {}

local n = 0
for k,v in pairs(a) do
    n = n+1
    falas[n] = k
end

print(falas[1])
print(falas[2])