local height = 5
local width = 5

function BuildUp(height)
    for i=1,height do
        turtle.place()
        turtle.up()
    end
end

function BuildDown(height)
    for i=height,1,-1 do
        turtle.place()
        turtle.down()
    end
end

function MoveRight()
    turtle.turnRight()
    turtle.forward()
    turtle.turnLeft()
    turtle.down()
end

for currWidth=1,width+2,2 do
    BuildUp(height)
    MoveRight()
    BuildDown(height)
end