build

while true do

   turtle.select(16)
   if turtle.getItemCount(16)<32 then
     turtle.suckUp(32)
   end

   turtle.refuel()

   turtle.select(1)
   if turtle.getItemCount(1)<32 then
      turtle.turnLeft()
      turtle.suck(32)
      turtle.turnRight()
   end

   turtle.select(2)
   if turtle.getItemCount(2)<32 then
     turtle.turnRight()
     turtle.suck(32)
     turtle.turnLeft()
   end

   turtle.back()
   turtle.up()
   turtle.up()
   turtle.forward()
   turtle.forward()
   turtle.forward()
   turtle.turnRight()
   turtle.down()
   turtle.down()
   turtle.down()
   turtle.down()

   turtle.select(1)
   turtle.placeDown()
   turtle.turnLeft()
   turtle.place()
   turtle.turnRight()
   turtle.turnRight()
   turtle.place()
   turtle.turnLeft()

   turtle.up()
   turtle.placeDown()
   turtle.select(2)
   turtle.turnLeft()
   turtle.place()
   turtle.turnRight()
   turtle.turnRight()
   turtle.place()
   turtle.turnLeft()

   turtle.up()
   turtle.placeDown()

   turtle.turnLeft()
   turtle.up()
   turtle.up()
   turtle.back()
   turtle.back()
   turtle.back()
   turtle.down()
   turtle.down()
   turtle.forward()
   sleep (40)
end