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by; by on ; in on, by with; on
specially especially generally normally
takes a bike by bike on foot rides a bike
How long How often How much How many times
on foot by bike by bus by subway
some time sometime some times sometimes
by , on on , by on , in by , by
on, on by, on by, by in, on
usually never often sometimes
go;on feet goes;in foot. go;on foot goes;on foot.
often sometime always seldom
take, in on, by by, on in, on
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