For those of you that think since design comprises everything design is everything:
X={1,2,3,4,5}
A={3,1}
B={4,2}
C={5}
A subset of X.
B subset of X.
C subset of X.
X superset of A,B,C.
X != A
X != B
X != C
X={1,2,3,4,5}
A={3,1}
B={4,2}
C={5}
A subset of X.
B subset of X.
C subset of X.
X superset of A,B,C.
X != A
X != B
X != C