The single basic motion that makes the figures concede are
1. translation
2. translation
3. rotation
4. reflection
How to find the motions
The basic motion is derived from transformation
1. This is translation with translation left direction
2. This will require 2 translations, downwards and to the left
3. A rotation of 180 degrees will make the two objects coincide
4. A reflection along a reflection line in the vertical direction