Quiver plot of initial velocities in the comoving frame for three setups used in this paper. While our simulations use spherical clouds, this plot shows their cross sections at z=0. The arrow sizes correspond to the magnitude of the particle velocities and the colors correspond to the rotational contribution (from Eq. B.2c). The left panel (a) indicates the Keplerian setup (C.1), which yields a total prograde rotation equal to . The middle panel (b) corresponds to the zero-rotation initial condition (Eq. C.2), while the right panel (c) corresponds to uniform rotation with the same initial rotational angular momentum as the Keplerian setup.