Nidan-Ko-Soto-Gake
(two step minor outer hook)

"As Tori attacks with Ko-soto-gari Uke raises his right leg in oder to defuse the attack. Tori switches his assult onto Uke's left leg, imobilising Uke's right leg between his thighs as he does so. Tori, placing his left foot on the rear of Uke's left knee he throws Uke (ko-soto-gake fashion)."