Zinkblende ctr kr ctrf.-fk.-fk-fk.-ctrctrctrf.-fk-f % f.-fk.-fk-fk.-ctrctrctrf.-fk-f % - fk.-fk-fk.-ctrctrctrf.-fk-f % k.-fk-fk.-ctrctrctrf.-fk-f % - fk-fk.-ctrctrctrf.-fk-f%