startup

z=0
y=0

function up()
  while turtle.up() == false do
    turtle.digUp()
    turtle.attackUp()
  end
end

while 1 do
  turtle.select(1)
  turtle.turnRight()
  turtle.suck(64-turtle.getItemCount())
  turtle.turnRight()
  turtle.select(2)
  turtle.suck(64-turtle.getItemCount())
  turtle.turnRight()
  turtle.select(3)
  turtle.suck(64-turtle.getItemCount())
  turtle.refuel(1)
  turtle.turnRight()
  turtle.forward()
  turtle.forward()
  turtle.forward()
  turtle.select(1)
  turtle.place()
  turtle.select(2)
  turtle.place()
  turtle.place()
  turtle.place()
  turtle.up()
  repeat
    if turtle.detect() == false then
      turtle.down()
      if turtle.place() == false then
        sleep(300)
      end
      turtle.up()
    end
    if turtle.detect() == true then
      y=1
    end
  until y==1
  y=0
  turtle.down()
  while turtle.detect() == true do
    turtle.dig()
    up()
    z=z+1
  end
  for c=1,z do
    turtle.down()
  end
  z=0
  turtle.turnRight()
  turtle.turnRight()
  turtle.forward()
  turtle.forward()
  turtle.forward()
  turtle.turnRight()
  turtle.turnRight()
  turtle.select(4)
  turtle.dropUp()
  turtle.select(5)
  turtle.dropUp()
end