```xml
<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<ns4:query_definition xmlns:ns2="http://www.i2b2.org/xsd/cell/crc/psm/1.1/" xmlns:ns4="http://www.i2b2.org/xsd/cell/crc/psm/querydefinition/1.1/" xmlns:ns3="http://www.i2b2.org/xsd/cell/crc/psm/analysisdefinition/1.1/">
    <query_name>Blisters with e@23:09:37</query_name>
    <query_timing>ANY</query_timing>
    <specificity_scale>0</specificity_scale>
    <panel>
        <panel_number>1</panel_number>
        <panel_timing>ANY</panel_timing>
        <panel_accuracy_scale>100</panel_accuracy_scale>
        <invert>0</invert>
        <total_item_occurrences>1</total_item_occurrences>
        <item>
            <hlevel>6</hlevel>
            <item_name>Blisters with epidermal loss due to burn [second degree] of toe(s) (nail)</item_name>
            <item_key>\\i2b2_DIAG\i2b2\Diagnoses\Injury and poisoning (800-999)\Burns (940-949)\(945) Burn of lower limb(s)\(945-2) Blisters with epidermal l~\(945-21) Blisters with epidermal ~\</item_key>
            <item_icon>FA</item_icon>
            <tooltip>Diagnoses \ ... \ Blisters with epidermal loss due to burn (second degree) of lower limb(s) \ Blisters with epidermal loss due to burn [second degree] of toe(s) (nail)</tooltip>
            <class>ENC</class>
            <item_is_synonym>false</item_is_synonym>
        </item>
    </panel>
</ns4:query_definition>

```

I want to find diagnoses of second-degree burn blisters with epidermal loss on the toes, specifically those involving the nails, using the i2b2 query builder.