ComputerCraft 12x12 Floor Builder

function line()
 for a = 1,11 do
  turtle.placeDown()
  turtle.forward()
 end
end

function fourLines()
 for b = 1,2 do
  line()
  turtle.placeDown()
  turtle.turnRight()
  turtle.forward()
  turtle.turnRight()
  line()
  turtle.placeDown()
  turtle.turnLeft()
  turtle.forward()
  turtle.turnLeft()
 end
end

function c()
 for c = 1,4 do
  turtle.placeDown()
  turtle.forward()
 end
end

function d()
 for d = 1,7 do
  turtle.placeDown()
  turtle.forward()
 end
end

function e()
 for e = 1,8 do
  turtle.placeDown()
  turtle.forward()
 end
end

function f()
 for f = 1,3 do
  turtle.placeDown()
  turtle.forward()
 end
end

turtle.up()
turtle.select(1)
fourLines()
c()
turtle.select(2)
d()
turtle.placeDown()
turtle.turnLeft()
turtle.forward()
turtle.turnLeft()
fourLines()
e()
turtle.select(3)
f()
turtle.placeDown()
turtle.turnLeft()
turtle.forward()
turtle.turnLeft()
line()
turtle.placeDown()
turtle.turnRight()
turtle.forward()
turtle.turnRight()
line()
turtle.placeDown()