Find the critical number(s) , if any of the function 
Definitions:
Obsessive-compulsive Personality Disorder
A disorder characterized by a pervasive pattern of preoccupation with orderliness, perfectionism, and control, at the expense of flexibility, openness, and efficiency.
Hallucinations
Perceptions in the absence of external stimuli, such as seeing or hearing things that aren't there.
DSM
The Diagnostic and Statistical Manual of Mental Disorders, a standardized classification of mental disorders used by mental health professionals.
Discrete Categories
Distinct and separate groups or classifications without overlap.
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