The wing A makes a pressure and passes the ball to B, who receives the ball while running forward. After the pass A runs to the position of B.
B makes a pressure and passes the ball to C, who receives the ball while running forward. After the pass B runs to the position of C.
C takes the shot and runs behind the line of D.
About the same time B makes the pressure, the wing D makes a pressure and passes the ball to E and the exercise now continues at the opposite side.
The timing in the exercise is, that the center player does not stop, but is in position to get the ball from the backcourt players and can shoot.