Ushiro Ryokatadori Kokyunage
1. Do not go against Uke's grip.
2. Create a new common target so that Uke and Nage can follow it.
3. To think of all possible variants and to look for solutions is fighting.
4. Uke following the new target must be led past Nage. This is how Nage gets outside of the confrontation zone which is behind Uke.
See also "ALL OF AIKIDO", Part 2, Chapter 17