1. double t all adjacent on the same floor.2. between the pair leave the pair on the same floor.3. every double anti-blur with Center address address all first floor next to the Center.
1. pair of adjacent layers in the same space between the pair in the same class 2. 3. Every function is central to all of the first floor next to the central rack.
1. Couples adjacent to all in the same class.2. Between pairs event pairs in the same class.3. Every pair in solution center with every pair is the first-class next I center.