My teachers don't really teach the names either, so I took some time for learning them.
For me it helped a lot to just silently repeat the name of the technique the first fiew times of practicing it. This is probably only a good idea, if you already know the basic movements of the technique. The nice thing is, it works the other way too - when I say Iriminage my body automatically knows what to do - this helps a lot under stress or during a blackout
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Jo