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ACROSS
1)  an oil reservoir in an internal combustion engine
2)  a tall perennial woody plant having a main trunk and branches forming a distinct elevated crown; includes both gymnosperms and angiosperms
3)  the boundary of a surface
4)  a person who is physically weak and ineffectual


DOWN
1)  agitation resulting from active worry
2)  the official literary language of pakistan, closely related to hindi; widely used in india (mostly by moslems); written in arabic script
3)  the number that is represented as a one followed by 6 zeros
4)  liquid excretory product

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