How long can you dribble the ball while being closely guarded?

According to the National Federation of State High School Association, rule 9 section 10 "Closely Guarded"

Art. 1...A player shall not while closely guarded:

a. In his/her frontcourt, hold the ball for five seconds or dribble the ball for five seconds.

b. In his/her frontcourt, control the ball for five seconds in an area enclosed by screening teammates.

Art. 2...A closely guarded count shall not be started during an interrupted dribble.

Art. 3...A closely guarded count shall be terminated during an interrupted dribble.