private fun three_faces(face1, face2, face3: Int): Text do
		var b = new Buffer
		var face_ids = [face1, face2, face3]
		for i in [0 .. 3[ do
			for j in face_ids do
				var face = faces[j]
				var ln = face[i]
				b.append("{ln[0].rubix_colour} {ln[1].rubix_colour} {ln[2].rubix_colour} ")
			end
			b.add '\n'
		end
		return b
	end