function clearTree()
	print("attempting to clear a tree")
	turtle.dig()
	turtle.forward()
	local cleared = false
	local tempHeight = 0
	repeat
		local tempBlock, n = turtle.inspectUp()
		if tempBlock then
			if n.name == "minecraft:log" then
				tempHeight = tempHeight + 1
				turtle.digUp()
				turtle.up()
			end
		else
			cleared = true
		end
	until(cleared == true)
	repeat
		turtle.down()
		tempHeight = tempHeight - 1
	until (tempHeight == 0)
	turtle.back()
	print("successfully cleared a tree!")
end

function nextTreeInRow()
	print("attempting to go to the next tree in row")
	turtle.turnLeft()
	turtle.forward()
	turtle.forward()
	turtle.forward()
	turtle.forward()
	turtle.turnRight()
	print("successfully went to the next tree in row!")
end

function goToNextRow()
	print ("attempting to go to the next row")
	turtle.turnRight()
	turtle.forward()
	turtle.turnLeft()
	turtle.forward()
	turtle.forward()
	turtle.forward()
	turtle.forward()
	turtle.turnLeft()
	turtle.forward()
	turtle.turnRight()
	print (" successfully went to the next row")
end

function returnToStart()
	print("attempting to go to the start of the trees")
	turtle.turnRight()
	turtle.forward()
	turtle.turnRight()
	for i = 0, 15, 1
	do
		turtle.forward()
	end
	turtle.turnRight()
	turtle.forward()
	turtle.turnRight()
	print("sucessfully returned to the start")
end

function startOfRow()
	turtle.turnRight()
	for i = 0, 11, 1
	do
		turtle.forward()
	end
	turtle.turnLeft()
end

local length = 4
local width = 5

for w = 1, width-1, 1
do
	clearTree()
	for l = 1, length-1, 1
	do
		nextTreeInRow()
		clearTree()
	end
	startOfRow()
	goToNextRow()
end
returnToStart()