grind

function step()
   turtle.dig()
   turtle.forward()

   for i=1, 12 do
   turtle.digUp()
   turtle.up()
   end

   for u=1, 12 do
   turtle.down()
   end

end


for m=1, 41 do

  for t=1, 10 do
  step()
  end

  for t=1, 10 do
  turtle.back()
  end

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

end

turtle.turnLeft()

for p=1, 41 do
  turtle.forward()
  end

turtle.turnRight()

for g=1, 11 do
turtle.forward()
end