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is； are have； are has； are are； is
the; the a; a the; a a; the
is; are are; is is; is are; are
is; was; is; were are, is are; was
is; are are; is have; is have; are
is are has been have been
.is are has been have been
is were has been have been
is were has been have been
is are has been have been
to rank ranked ranking ranks
A number who study steadily
is; are are; is have; is have; are
on both side; a number on each sides; a number on both sides; the number on every side; the number
is are has been have been
is are has been have been
is are has been have been
are; is is; are have; are has; is
is are has been have been
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