  We analyze the higher conserved charges of type IIB superstring on AdS5 x S5
from the perspective of a recently discovered generalized Gribov-Lipatov
reciprocity. We provide several evidences that reciprocity holds for all the
higher charges and not only for the energy. This is discussed in the simple
case of twist L=2, and 3 operators in the sl(2) subsector at (a) multi-loop
level in weak coupling, (b) classical level at strong coupling for the dual
folded string.
