x = 0
    y = 0
    z = 0
    o = 1

    function dejotodo()
      tempx = x
      tempy = y
      tempz = z
      tempo = o

      if z > 1 then
        if o == 4 then
          turtle.turnLeft()
          o = 3
        else
          repeat
            turtle.turnRight()
            o = o + 1
          until o == 3
        end

        repeat
          repeat
            turtle.dig()
          until turtle.forward() == true
          z = z - 1
        until z == 1
      end

      if y > 0 then
        repeat
          repeat
            turtle.digDown()
          until turtle.down() == true
          y = y - 1
        until y == 0
      end

      turtle.turnRight()
      o = 4

      if x > 0 then
        repeat
          repeat
            turtle.dig()
          until turtle.forward() == true
          x = x - 1
        until x == 0
      end

      turtle.turnLeft()
      o = 3
	  turtle.forward()
      z = 0

      for i=1,14 do
        turtle.select(i)
        turtle.drop()
      end

      turtle.turnLeft()
      turtle.turnLeft()
      o = 1

	  turtle.forward()
      z = 1
      turtle.turnRight()
      o = o + 1

      if x < tempx then
        repeat
          repeat
            turtle.dig()
          until turtle.forward() == true
          x = x + 1
        until x == tempx
      end

      if y < tempy then
        repeat
          repeat
            turtle.digUp()
          until turtle.up() == true
          y = y + 1
        until y == tempy
      end

      turtle.turnLeft()
      o = o - 1

      if z < tempz then
        repeat
          repeat
            turtle.dig()
          until turtle.forward() == true
          z = z + 1
        until z == tempz
      end

      if tempo == 4 then
        turtle.turnLeft()
        o = 4
      else
        repeat
          turtle.turnRight()
          o = o + 1
        until o == tempo
      end

    end

    function paraarriba ()
      for o=1,arriba do
        repeat
          turtle.digUp()
        until turtle.up() == true
        y = y + 1
        turtle.select(15)
        if turtle.compareTo(14) == false then
          dejotodo()
        end
      end
    end

    function paraabajo ()
      for p=1,arriba do
        repeat
          turtle.digDown()
        until turtle.down() == true
		y = y - 1
      end
    end

    function pasada (derecha, arriba)
      b = false
      for j=1,derecha do

        if b == true then
          paraabajo(arriba)
          b = false
        else
          paraarriba(arriba)
          b = true
        end

        if derecha ~= j then
          repeat
            turtle.dig()
          until turtle.forward() == true
		  if o == 2 then
            x = x + 1
          else
            x = x - 1
          end
        end
      end
    end

    term.clear()
    term.setCursorPos(1,3)
    write("Cuanto va a picar hacia la derecha? ")
    derecha = tonumber(read())

    term.clear()
    term.setCursorPos(1,3)
    write("Cuanto va a picar hacia arriba? ")
    arriba = tonumber(read())
    arriba = arriba - 1

    term.clear()
    term.setCursorPos(1,3)
    write("Cuanto va a picar de profundo? ")
    profundo = tonumber(read())

    if derecha%2 == 1 then
      impar = true
    else
      impar = false
    end

    side = false

    for i=1,profundo do
      turtle.dig()
      turtle.forward()
      z = z + 1

      if side == false then
        turtle.turnRight()
		o = o + 1
		if o > 4 then 0 = 1 end
      else
        turtle.turnLeft()
		o = o - 1
		if o < 1 then 0 = 4 end
      end

      pasada(derecha, arriba)

      if impar == true then
        for i=1,arriba do
        repeat
          turtle.digDown()
        until turtle.down() == true
        end
      end

      if side == false then
        turtle.turnLeft()
		o = o - 1
		if o < 1 then 0 = 4 end
        side = true
      else
        turtle.turnRight()
		o = o + 1
		if o > 4 then 0 = 1 end
        side = false
      end
    end