What is the best way convert XML to Map in Java in specific format?

I have the XML file in following format. Number of tags and nested hierarchy are randomly

<a>0
    <b>1
        <c>2
            <d>3
                <e>4</e>
            </d>
            <d>5
                <e>6</e>
                <e>7</e>
                <e>8</e>
            </d>
            <d>9
                <e>10</e>
            </d>
        </c>
    </b>
    <b>11
        <c>12
            <d>13
                <e>14</e>
            </d>
        </c>
        <c>14
            <d>15
                <e>16</e>
            </d>
        </c>
    </b>
</a>

I would like to parse it to get the next data sets:

0,1,2,3,4
0,1,2,5,6
0,1,2,5,7
0,1,2,5,8
0,1,2,9,10
0,11,12,13,14
0,11,14,15,16

In other words - each a,b,c,d,e nested combination.