if turtle.getFuelLevel() < 10 then
    turtle.refuel()
end
function Digs()
    while turtle.detect() == true do
        turtle.dig()
    end
end
function DigsUp()
    while turtle.detectUp() == true do
        turtle.digUp()
    end
end
function DigsForward()
    Digs()
    turtle.forward()
    DigsUp()
    turtle.digDown()
end
local times
term.write("How many times?: ")
times = read()
for i = 0, times do
    if i % 4 == 0 then
        turtle.select(16)
        turtle.turnLeft()
        turtle.placeUp()
        turtle.turnRight()
        turtle.select(1)
    end
    DigsForward() 
    turtle.turnRight()
    DigsForward()
    DigsForward()
    turtle.back()
    turtle.back()
    turtle.turnLeft()
end