"First form" or "arm-stretching pin": tori guides uke's arm over the contact at the elbow and wrist
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Arm locking technique developed from a kaiten-nage entrance; also called ude-garami
"Third form" or "wrist-turning pin": tori leads uke by gripping the edge of the inwardly twisted hand (sword cutting movement)
Sankyo with uchi-kaiten-nage entry