bios:14 ',' expected

function main()
    print("Started Mining 3x3 for 75 blocks!")
    turtle.select(1)
    turtle.refuel()
    for i = 0; 75 do
	 if turtle.detect() then
	  turtle.dig()
	 end
   turtle.up()
    if turtle.detect() then
	 turtle.dig()
    end
   turtle.forward()
   turtle.turnLeft()
    if turtle.detect() then
	 turtle.dig()
    end
   turtle.down()
    if turtle.detect() then
	 turtle.dig()
    end
   turtle.up()
   turtle.turnRight()
   turtle.turnRight()
    if turtle.detect() then
	 turtle.dig()
    end
   turtle.down()
    if turtle.detect() then
	 turtle.dig()
    end
   turtle.turnLeft()
  end
turtle.turnRight()
while not turtle.detect() do
  turtle.forward()
end
end