not (10 > 5 and 100 < 9)
not not a > b
not a > b
not a = b
not a < b
not a is true
not a between 1 and 100
(1 and 2) and (3 and 4) and 5
(1 or 2) or (3 or 4 or 5)
(1 and 2) or (3 and 1)
not(not(a))
A or (A And B) or (A And C) 
(A and B) or (A and C and D) 
(A and B) or (A and C)
(A and B and C) or (A and B and D)