Turtle Diggies.

function diggy221()
if turtle.detect() then
turtle.dig()
end
if turtle.detectUp() then
turtle.digUp()
turtle.up()
else
turtle.up()
end
if turtle.detect() then
turtle.dig()
end
turtle.down()
turtle.forward()
end

function diggy921()
local i = 1
for i, 9 do
diggy221()
end
end