"From a standard right handed grip
Tori steps in with his left foot and falls back onto his back.
Tori then brings his right foot to Uke's abdomen. (as if for
tomoe-nage) As
Tori does so, Uke takes a step to Tori's right with his right
foot. Tori retains his hold on Uke's jacket and his foot in
Uke's stomach, bringing his left leg over Uke's right thigh
and under Uke's body to apply the lock."