function ppf()
i=1
while true do
if turtle.getItemCount(i) ~=0 then
turtle.select(i)
turtle.place()
break
else
i=i+1
turtle.select(i)
turtle.place()
end
if turtle.detect() then break
end
end
end

function ppup()
c=1
while true do
if turtle.getItemCount(c) ~=0 then
turtle.select(c)
turtle.placeUp()
break
else
c=c+1
turtle.select(c)
turtle.placeUp()
end
if turtle.detectUp() then break
end
end
end

function ppdw()
d=1
while true do
if turtle.getItemCount(d) ~=0 then
turtle.select(d)
turtle.placeDown()
break
else
d=d+1
turtle.select(d)
turtle.placeDown()
end
if turtle.detectDown() then break
end
end
end


turtle.forward()
turtle.turnRight()

ppup()
ppdw()
turtle.forward()
turtle.turnRight()
turtle.turnRight()
ppf()
turtle.turnRight()
turtle.turnRight()

ppup()
ppdw()
turtle.forward()
turtle.turnRight()
turtle.turnRight()
ppf()
turtle.turnRight()
turtle.turnRight()

ppup()
ppdw()
turtle.forward()
turtle.turnRight()
turtle.turnRight()
ppf()
turtle.turnRight()
turtle.turnRight()

turtle.turnLeft()

ppup()
ppdw()
turtle.forward()
turtle.turnRight()
turtle.turnRight()
ppf()
turtle.turnRight()
turtle.turnRight()

ppup()
ppdw()
turtle.forward()
turtle.turnRight()
turtle.turnRight()
ppf()
turtle.turnRight()
turtle.turnRight()

ppup()
ppdw()
turtle.forward()
turtle.turnRight()
turtle.turnRight()
ppf()
turtle.turnRight()
turtle.turnRight()

turtle.turnRight()

ppup()
ppdw()
turtle.forward()
turtle.turnRight()
turtle.turnRight()
ppf()
turtle.turnRight()
turtle.turnRight()