Let C be the virtual time constructed by algorithm CounterClocks.

For each of the following situations, provide a small example showing its occurrence:

1. t

(a) > t

(b) but C

(a) < C(b)

2. t

(a) = t

(b) while C

(a) < C(b)

3. t

(a) < t

(b) but C

(a) = C(b)

4. t

(a) < t

(b) while C

(a) > C(b)