Kata ashi dori
(single leg hold drop)
Tsukuri- Uke is unbalanced to the right side back, his right
leg slightly in front.
Tori puts his right foot forward and on the outside of Uke's
right foot and advances his left foot abreast of Uke's left
foot.
The lines of the feet therefore form an obtuse angle.
Tori being entirely at Uke'sright side.
Kaki- At this moment Tori places his right hand under his left
hand, he pushes Uke's shoulder backwards.
The movements of his arms are complementary so as to throw Uke
backwards.

pictures
found here