function movetotree()
   for i=1,7 do
      turtle.forward()
   end
end

function drop()
   for d=1,15 do
      turtle.select(i)
      turtle.dropDown()
   end
end

function cut()
   while true do
      if not turtle.digUp() then
      turtle.up()
      else turtle.back()
      break
      end
   end
end

function movetodrop()
   for g=1,7 do
      turtle.back()
   end
end

function refuel()
   if (turtle.getFuel()=="Unlimited") then
      break
   else turtle.select(16)
   turtle.suck()
   turtle.refuel(64)
   turtle.select(1)

function plant()
   turtle.select(15)
   turtle.place()
   turtle.select(1)
end

function saplings()
   turtle.select(15)
   turtle.suckRight()
   turtle.select(1)
end

while true do
   refuel()
   saplings()
   movetotree()
   for z=1,64 do
      plant()
      sleep(180)
      cut()
   end
   movetodrop()
   drop()
end