number to letter again

local k = "9 6 27 25 15 21 27 18 5 1 4 27 20 8 9 19 27 25 15 21 27 1 18 5 27 7 1 25"
local j = ""

local alph = {"a","b","c","d","e","f","g","h","i","j","k","l","m","n","o","p","q","r","s","t","u","v","w","x","y","z"," "}

-- LOCAL K
local tab = {}
local savar = 0
for i=1,#k do
    if string.sub(k,i,i) == " " and i == 1 then
        savar = i
        table.insert(tab,string.sub(k,1,i-1))
    elseif string.sub(k,i,i) == " " and i ~= 1 then
        table.insert(tab,string.sub(k,savar+1,i-1))
        savar = i
    elseif i == #k then
        table.insert(tab,string.sub(k,savar+1,i))
    end
end
local output = ""
for i=1,#tab do
    local ll = tab[i]
    output = output..alph[tonumber(ll)]
end
print(output)
--LOCAL J
local output = ""
for i=1,#j do
    local g = string.sub(j,i,i)
    for f=1,#alph do
        if alph[f] == g then
            output = output..f.." "
            break
        end
    end
end
print(output)