local letters2 = {}

for num = 1, 62 do
    local letter = string.char(64 + num) 
    letters2[num] = {Letter = letter, Num = num}
end

local length = math.random(1,10+(math.random(1,5+(math.random(1,2)))))*math.ceil(math.random(1)*2.25)

function GetId()
    for i = 1, length do
        ltr = math.random(1,62)
        io.write(letters2[ltr].Letter)
    end
    io.write("\n")
end

for i = 1,10 do
GetId() end