private fun single_face(face_id: Int): Text do
		var b = new Buffer
		var face = faces[face_id]
		for i in [0 .. 3[ do
			var ln = face[i]
			b.append("{" " * 6}{ln[0].rubix_colour} {ln[1].rubix_colour} {ln[2].rubix_colour}{" " * 6}\n")
		end
		return b
	end