a) X1 forces 1 right, 1 takes three dribbles, X1 squares him up (cuts him off), 1 pushes X1 down to the floor with the ball (X1 takes a charge)
b) 1 takes three dribbles to the left, X1 takes a charge.
Progression - no charge, 1 just beats X1 if he can.
c) 1 passes to coach and runs a give and go, X1 jumps to the ball to defend the cut
d) 1 goes to the box, X1 fronts the post (even in the NBA) by putting his ass into the attacker, hands up
e) 1 steps out to the wing for a pass, it's live, three dribbles, X! does not allow middle, finish the play - whoever rebounds a missed shot puts it in (attacker or defender).
See Defending - Zig-zag.