public class QuadTree {

    public static void main(String[] args) throws InterruptedException, NumberFormatException, IOException {
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));

        int testcase = Integer.parseInt(br.readLine().trim());

        for (int t = 0; t < testcase; t++) {
            String str = new String(br.readLine());

            QTree top = new QTree();
            int readsize = top.read(str, 0);
            if (readsize != str.length()) {
                Thread.sleep(3000);
            }

            System.out.println(top.reverse_write());
        }
    }
}

class QTree {
    QTree leftTop;
    QTree rightTop;
    QTree leftBottom;
    QTree rightBottom;

    char color = 0;

    int read(String str, int index) throws InterruptedException {
        char cur = str.charAt(index);
        index++;

        if (cur == 'x') {
            leftTop = new QTree();
            rightTop = new QTree();
            leftBottom = new QTree();
            rightBottom = new QTree();

            index = leftTop.read(str, index);
            index = rightTop.read(str, index);
            index = leftBottom.read(str, index);
            index = rightBottom.read(str, index);
        } else {
            this.color = cur;
            if (cur != 'b' && cur != 'w') {
                Thread.sleep(3000);
            }
        }

        return index;
    }

    String reverse_write() {
        if (this.color != 0) {
            return this.color + "";
        } else {
            String[] rqt = new String[4];

            rqt[0] = leftTop.reverse_write();
            rqt[1] = rightTop.reverse_write();
            rqt[2] = leftBottom.reverse_write();
            rqt[3] = rightBottom.reverse_write();

            return 'x' + rqt[2] + rqt[3] + rqt[0] + rqt[1]; 
        }
    }
}

    int reverse_write(char[] buf, int index) {
        if (this.color != 0) {
            buf[index++] = this.color;
        } else {
            buf[index++] = 'x';

            index = leftBottom.reverse_write(buf, index);
            index = rightBottom.reverse_write(buf, index);
            index = leftTop.reverse_write(buf, index);
            index = rightTop.reverse_write(buf, index);
        }

        return index;
    }