jungel favago

function fuel()
  if turtle.getFuelLevel() < 10 then
    turtle.refuel(1)
  end
end

turle.dig()
fuel()
turtle.forward()

local height = 0

while turtle.decetUp() do
  fuel()
  turtle.dig()
  turtle.digUp()
  turtle.up()
  height = height + 1
end

fuel()
turtle.turnRight()
turtle.forward()
turtle.turnLeft()

for i=1,height do
  fuel()
  turtle.digDown()
  turtle.dig()
  turtle.down()
end