1  2  3  4 

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2  _  _  _  _

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4  _  _  _  _


ACROSS
1)  a course of conduct
2)  a fit of shivering or shaking
3)  a writing implement with a point from which ink flows
4)  an enzyme found in mammals that can catalyze the deamination of adenosine into inosine and ammonia


DOWN
1)  an informal term for a father; probably derived from baby talk
2)  people who are old collectively
3)  tropical american prickly pear of jamaica
4)  english pianist (1890-1965)

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