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<option value="or"><?php esc_html_e('OR', 'ithemeland-bulk-variation-editing-for-woocommerce'); ?></option>
<option value="and"><?php esc_html_e('And', 'ithemeland-bulk-variation-editing-for-woocommerce'); ?></option>
<option value="not_in"><?php esc_html_e('Not IN', 'ithemeland-bulk-variation-editing-for-woocommerce'); ?></option>