turtletunnel

turtle.refuel()
i = 0
ii = 0
while true do
 i = i+1
 ii = ii + 1
 print(i)

 turtle.dig()
 turtle.forward()
 turtle.turnLeft()
 turtle.dig()
 turtle.turnRight()
 turtle.turnRight()
 turtle.dig()

 turtle.digUp()
 turtle.up()
 turtle.dig()
 turtle.turnLeft()
 turtle.turnLeft()
 turtle.dig()

 turtle.digUp()
 turtle.up()
 turtle.dig()
 turtle.turnRight()
 turtle.turnRight()
 turtle.dig()

 turtle.turnLeft()
 turtle.down()

 if i == 7 then
  i = 0
  turtle.turnRight()
  turtle.select(2)
  turtle.place()
  turtle.turnLeft()
 end

 turtle.down()

 if turtle.getItemCount(16) != 0 then
  deposit(ii)
 end
end

function deposit(ii)
 turtle.turnRight()
 turtle.turnRight()
 for i=0,ii do
  turtle.forward()
 end
 for i = 16,1,-1 do
  if i != 2 then
   turtle.select(i)
   turtle.drop()
  end
 end
 turtle.turnRight()
 turtle.turnRight()
 for i=0,ii do
  turtle.forward()
 end
end