9. Cannabis use is continued despite knowledge of having a persistent or recurrent
physical or psychological problem that is  likely to have been caused or exacerbated
by cannabis.
10. Tolerance, as defined by either of the following:
a. A need for markedly increased amounts of cannabis to achieve intoxication or
desired effect.
b. Markedly diminished effect with continued use of the same amount of cannabis.
11. Withdrawal, as manifested by either of the following: 
a. The characteristic withdrawal syndrome for cannabis (refer to Criteria A and B
of the criteria set for cannabis withdrawal, pp. 517–518).