local v = 1
local y = 0
local x = 0

function placesat()
turtle.placeDown()
turtle.forward()
turtle.placeDown()
turtle.turnRight()
turtle.forward()
turtle.placeDown()
turtle.turnRight()
turtle.forward()
turtle.placeDown()
turtle.forward()
turtle.placeDown()
turtle.turnRight()
turtle.forward()
turtle.placeDown()
turtle.forward()
turtle.placeDown()
turtle.turnRight()
turtle.forward()
turtle.placeDown()
turtle.forward()
turtle.placeDown()
turtle.turnRight()
turtle.forward()
turtle.turnLeft()
turtle.back()
x = 0
end
function landing()
turtle.turnLeft()
turtle.forward()
turtle.turnRight()
turtle.forward()
turtle.turnLeft()
turtle.forward()
turtle.turnLeft()
turtle.forward()
turtle.turnLeft()
turtle.down()
turtle.down()
turtle.forward()
turtle.forward()
turtle.turnLeft()
 repeat
 turtle.down()
 v = v - 1
 until v < 2
end
print ("Enter your current elevation [Y] and press enter to begin.")
y = read()
repeat
turtle.up()
v = v + 1
until v > (128 - y)
placesat()
repeat
turtle.forward()
x = x + 1
until x > 31
placesat()
turtle.turnLeft()
repeat
turtle.forward()
x = x + 1
until x > 31
turtle.turnRight()
placesat()
turtle.turnLeft()
turtle.turnLeft()
repeat
turtle.forward()
x = x + 1
until x > 31
turtle.turnRight()
turtle.turnRight()
placesat()
turtle.turnLeft()
turtle.turnLeft()
repeat
turtle.forward()
x = x + 1
until x > 31
turtle.turnRight()
turtle.turnRight()
placesat()
turtle.turnRight()
repeat
turtle.forward()
x = x + 1
until x > 31
turtle.turnLeft()
placesat()
turtle.turnRight()
repeat
turtle.forward()
x = x + 1
until x > 31
turtle.turnLeft()
placesat()
repeat
turtle.forward()
x = x + 1
until x > 31
placesat()
repeat
turtle.forward()
x = x + 1
until x > 31
placesat()
turtle.turnLeft()
repeat
turtle.forward()
x = x + 1
until x > 31
x = 0
turtle.turnLeft()
repeat
turtle.forward()
x = x + 1
until x > 31
x = 0
turtle.turnRight()
turtle.turnRight()
landing()