turtle program

function digUntilAir()
    repeat
        turtle.dig()
        result, blockData = turtle.inspect()
    until not result or blockData.name == "minecraft:air"
end

function digUpUntilAir()
    repeat
        turtle.digUp()
        result, blockData = turtle.inspectUp()
    until not result or blockData.name == "minecraft:air"
end

function digDownUntilAir()
    repeat
        turtle.digDown()
        result, blockData = turtle.inspectDown()
    until not result or blockData.name == "minecraft:air"
end

x = io.read()
for i = 1, x do
    digUntilAir()
    turtle.forward()
    digUpUntilAir()
    digDownUntilAir()
    turtle.turnLeft()
    digUntilAir()
    turtle.forward()
    digUpUntilAir()
    digDownUntilAir()
    turtle.turnRight()
    turtle.turnRight()
    turtle.forward()
    digUntilAir()
    turtle.forward()
    digUpUntilAir()
    digDownUntilAir()
    turtle.turnLeft()
    turtle.turnLeft()
    turtle.forward()
    turtle.turnRight()
end