sentences:  The wings were connected by four unequally-spaced pairs of interplane struts on either side, the innermost pair on each side being just outboard of the upper longerons and the outer pair connecting only the upper pair of wings due to the shorter span of the lower wing.Although the ailerons fitted to the previous design had been satisfactory, Roe returned to wing warping for lateral control.The lifting triplane tailplanes of the earlier design were replaced by a non-lifting single triangular tailplane with a divided elevator and a small unbalanced rudder.