a playing boy
a running sportsman
an opened book
a singing girl
a flying bird
a built house
an eaten breakfast
a sent letter
a falling chair
a decorated room
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a playing boy
a running sportsman
an opened book
a singing girl
a flying bird
a built house
an eaten breakfast
a sent letter
a falling chair
a decorated room
a, a, an, a, a, a, an, a, a, a