A uniform spring of unstretched length \(L\) and spring constant \(k\) is cut into two segments of unstretched lengths \(\dfrac{1}{3}L\) and \(\dfrac{2}{3}L\). Three separate horizontal oscillators are assembled on a frictionless surface using identical blocks of mass \(M\): Configuration 1 connects the block to the segment of length \(\dfrac{1}{3}L\), Configuration 2 connects the block to the segment of length \(\dfrac{2}{3}L\), and Configuration 3 places the block between two fixed walls connected to both segments on opposite sides. Which of the following correctly ranks the oscillation periods \(T_1\), \(T_2\), and \(T_3\) of the three configurations?