a. Marked lane spaces may be occupied by a maximum of two offensive players; four defensive players may occupy lane spaces.
b. The first marked lane spaces on each side of the lane, above and adjacent to the first lane-space marks, must be occupied by opponents of the free thrower. No teammate of the free thrower must occupy either of these marked lane spaces.
c. The second marked lane spaces on each side may be occupied by teammates of the free thrower.
d. The third marked lane spaces on each side, nearest the free thrower, may be occupied by the opponents of the free thrower.
e. Players must be permitted to move along and across the lane to occupy a vacant marked lane space within the limitations listed in this rule.
f. Not more than one player may occupy any part of a marked lane space.ART. 5 . . . Any player, other than the free thrower, who does not occupy a marked lane space must be behind the free-throw line extended and behind the three-point line.