frame

for l = 1,3 do
turtle.select(1)
for i = 1,20 do
turtle.place()
turtle.up()
end
turtle.place()
turtle.select(2)
for i=1,20 do
turtle.placeUp()
turtle.back()
end
turtle.placeUp()
turtle.turnRight()
turtle.turnRight()
turtle.select(3)
for i = 1,20 do
turtle.place()
turtle.down()
end
turtle.place()
turtle.turnRight()
turtle.turnRight()
turtle.select(4)
for i= 1,20 do
turtle.placeDown()
turtle.forward()
end
turtle.placeDown()
turtle.turnRight()
turtle.forward()
turtle.turnLeft()
end
turtle.turnRight()
turtle.forward()
turtle.turnLeft()