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had benefited benefit benefited have benefited
has been decreasing had decreased decreased is decreasing
had decreased decreased has been decreasing is decreasing
closely closed close closer
had decreased decreased has been decreasing is decreasing
had decreased more than attach apply
as a result of on top of in front of in need of
had decreased decreased has been decreasing is decreasing
abstract solid fragile steady
had decreased decreased has been decreasing is decreasing
had decreased decreased has been decreasing is decreasing
has been increasing have been increasing had increased have increased
had benefited benefit benefited have benefited
The number of; has been planted A.great number of; have been planted A.great number of; has been planted The number of; have planted
doubled was doubling has doubled is doubled
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