rst = os.clock()
for i=2,16 do
  if turtle.getItemCount(i) > 0 then turtle.select(i);break end
  if turtle.getItemCount(i) == 0 then turtle.suckDown() end
end
turtle.place()
turtle.select(1)
time = os.clock()
while true do
--print(os.clock() - rst)
if turtle.compare() then
time = os.clock()
turtle.dig()
turtle.dropUp(turtle.getItemCount(1) - 1)
for i= 2,12 do
  if turtle.getItemCount(i) > 0 then turtle.select(i);break end
  if turtle.getItemCount(i) == 0 then turtle.suckDown() end
end
turtle.place()
turtle.select(1)
end
if os.clock() - time > 5 then
turtle.dig()
for i =2,16 do
if turtle.getItemCount(i) > 0 then turtle.select(i);break end
if turtle.getItemCount == 0 then turtle.suckDown() end
end
turtle.place()
turtle.select(1)
time = os.clock()
end
if os.clock() - rst > 500 then
os.reboot()
end
end