e yellow disk'
- connective linking moves of two selected disks. 
- connective linking the move of a selected disk and the move of a
situational disk;  example in trial 2 for

N.B. It is not clear here for location of moves at enunciative level. I have
to work that point a little more in order to give a theoretical
differenciation of criteria. I think of link between relation for moves and
repetition of disks for locations on disks. But it is complicated by the
fact that moves of enunciative level are linke