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takes；painting spends；painting costs，to paint spends；to paint
doing, in to do, in doing, on to do, on
does writing writes is writing spends on writing
is doing does spends in does doing
doing, in to do, in doing, on to do, on
spent; reading spends; reading spent; read spends; read
takes, to study costs, to study spends, studying spends, to study
is doing does spends in does doing
is doing does spends to do does doing
spends , riding takes, taking takes, riding spends, taking
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is doing does spends in does doing
twice as much time as twice much time twice much time as as twice time much
in, in in, on on, in on, on
is doing does spends in does doing
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