T1
T2
T3
T4
T5
T6
T7
T8
T9
THEN
S1
S2
S3
S4
S5
THEN
E1
E2
E3
E4
E5
M1
M2
M3
THEN
EVERY ROOM HAVE A LETTER AND A NUMBER
THEIR IS ABOUT 35 CLASSROOMS
T123 = ROOM T1 WORKSTATION 23