Position-velocity diagrams of large-scale rotational disk centered on the E nucleus. In the left panels, the positions vary along the mean kinematic major axis (PA = 45°), with positive distances toward south-west. In the right panels, the positions vary along the minor axis (PA = 135°), with positive distances toward north-west. The upper panels show the PV diagrams of Paα, while the lower panels show PV diagrams of H₂ 1-0 S(1). Black stars identify the stellar kinematics. The zero-velocity refers to $z_E^{\ast }$.