DES MOINES — The Iowa Girls High School Athletic Union released the 2013 regional basketball pairings Monday.

Here they are:

Class 5A (quarterfinals Feb. 13; semifinals Feb. 16; finals Feb. 19)

Class 4A (quarterfinals Feb. 13; semifinals Feb. 16; finals Feb. 19)

Class 3A (quarterfinals Feb. 9; semifinals Feb. 13; finals Feb. 16)

Class 2A (first round Feb. 9; quarterfinals Feb. 12; semifinals Feb. 15; finals Feb. 18)

Class 1A (first round Feb. 7; quarterfinals Feb. 12; semifinals Feb. 15; finals Feb. 18)