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Composition, 1969	Print 1/1969 No. 2, 1969	New World, 1972	Reflection No. 2, 1978
Print No. 1/1982, 1982	Collection No. 3/95, 1995	Collection No. 4/95, 1995	Time No. 1, 1996
Time No. 2/1996, 1996