Norm columnsaoa_mean_chinese_l1aoa_recognition_percent_chinese_l1aoa_recognition_n_chinese_l1aoa_source_chinese_l1familiar_mean_chinese_l1familiar_percent_chinese_l1familiar_n_chinese_l1familiar_source_chinese_l1concrete_mean_chinese_l1concrete_percent_chinese_l1concrete_n_chinese_l1strokes_chinese_l1frequency_chinese_l1