vr>v0>vyv_{r}>v_{0}>v_{y}vr>v0>vy
vy>v0>vrv_{y}>v_{0}>v_{r}vy>v0>vr
v0>vy>vrv_{0} > v_{y}>v_{r}v0>vy>vr
v0>vr>vyv_{0}>v_{r}>v_{y}v0>vr>vy