local tArgs = {...}

length = tArgs[1] - 2
width = tArgs[2] - 2
height = tArgs[3] - 2

function digForward()
  while not turtle.forward() do
    turtle.dig()
  end
end

function turn(y, z)
  if (y%2 == 0) && (z&2 == 0) then
    turtle.turnRight()
  else
    turtle.turnLeft()
  end
end

for z = 0,height do
  for y = 0,width do
    for x = 0,length do
      digForward()
    end
    turn(y, z)
    digForward()
    turn(y, z)
  end
  turtle.digDown()
  turtle.down()
end