2x2 V2

ocal mineDis = 1
local tunnels = 1


function mine()
    for i = 1,mineDis do
        turtle.dig()
        turtle.turnLeft()
        turtle.forward()
        turtle.turnRight()
        turtle.dig()
        turtle.up()
        turtle.dig()
        turtle.turnRight()
        turtle.forward()
        turtle.turnLeft()
        turtle.dig()
        turtle.down()
        turtle.forward()
    end
end


function backToStart()
   for i = 1,mineDis do
      turtle.back()
   end
end

function nextTunnel()
    turtle.turnLeft()
    turtle.forward()
    turtle.forward()
    turtle.forward()
    turtle.forward()
    turtle.turnRight()
end

function start()
    for i = 1,tunnels do
        mine()
        backToStart()
        nextTunnel()
    end
end

start()