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

function roof3()
 for c=1,3 do
 turtle.forward()
 turtle.placeDown()
 end
end

function roof2()
 for d=1,2 do
 turtle.forward()
 turtle.placeDown()
 end
end

print("Bauvorgang wird ausgeführt")

turtle.forward()
turtle.turnRight()

for b=1,5 do
 turtle.forward()
 turtle.placeDown()
end

turtle.turnLeft()

roof()

turtle.turnLeft()

roof()

turtle.turnLeft()

roof3()

turtle.turnLeft()

roof3()

turtle.turnLeft()

roof2()

turtle.turnLeft()

roof2()

turtle.turnLeft()

turtle.forward()

turtle.placeDown()

turtle.turnLeft()

turtle.forward()

turtle.placeDown()