function refuel()
   if turtle.getFuelLevel() < 10 then
      turtle.select(1)
      turtle.refuel(1)
      print("refueling")
   end
end

function plant()
   turtle.select(2)
   turtle.placeDown()
end

function harvest()
   turtle.digDown()
end

function prepare()
   turtle.attackDown()
end

function turnLeft()
   turtle.turnLeft()
   turtle.forward()
   turtle.turnLeft()
end

function turnRight()
   turtle.turnRight()
   turtle.forward()
   turtle.turnRight()
end

function work()
   refuel()
   harvest()
   prepare()
   plant()
   turtle.forward()
end

function main()
   print("Starting")
   refuel()
   turtle.up()
   turtle.forward()
   turtle.turnRight()

   for j=1,8 do
      for i=1,8 do
         work()
      end
      turnLeft()
      turtle.forward()
      for i=1,8 do
         work()
      end
      turnRight()
      turtle.forward()
   end
   print("end")
end


main()