Breakdown of i chaegi saenggakgwa dallaseo hwanbureul yocheonghaesseoyo.
~이~i
subject particle
~을~eul
object particle
책chaek
book
이i
this
~아서~aseo
so
요청하다yocheonghada
to request
다르다dareuda
different
~과~gwa
comitative particle
생각saenggak
thought
환불hwanbul
refund
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