mine.lua

function foo()
    turtle.dig()
    turtle.turnLeft()
    turtle.dig()
    turtle.turnLeft()
    turtle.dig()
    turtle.turnLeft()
    turtle.dig()
    turtle.turnLeft()
end
for i = 1,40 do
turtle.digDown()
foo()
turtle.down()
end
turtle.dig()
turtle.forward()
for i = 1,40 do
turtle.digUp()
foo()
turtle.up()
end