- U1 (grade 3, ground floor)U2 (grade 3, ground floor)U3 (grade 3, 1st floor)U4 (grade 2, 1st floor, 2 photos)U5 (grade 2, 1st floor)U6 (grade 2, 1st floor)U7 (grade 3, 1st floor)U8 (grade 3, 2nd floor, 4 photos)U9 (grade 2, 2nd floor)U10 (grade 2, 2nd floor)U11 (grade 2, 2nd floor)U12 (grade 3, 2nd floor)U13 (grade 3, 3rd floor)U14 (grade 2, 3rd floor)U15 (grade 2, 3rd floor)U16 (grade 2, 3rd floor)U17 (grade 3, 3rd floor)