  x Document
   ,-[$DIR/tests/html5lib-tests-fixture/tests19_dat.37.html:1:1]
 1 | <!doctype html><html c=d><body></html><html a=b>
   : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
   `----
  x Child
   ,-[$DIR/tests/html5lib-tests-fixture/tests19_dat.37.html:1:1]
 1 | <!doctype html><html c=d><body></html><html a=b>
   : ^^^^^^^^^^^^^^^
   `----
  x DocumentType
   ,-[$DIR/tests/html5lib-tests-fixture/tests19_dat.37.html:1:1]
 1 | <!doctype html><html c=d><body></html><html a=b>
   : ^^^^^^^^^^^^^^^
   `----
  x Child
   ,-[$DIR/tests/html5lib-tests-fixture/tests19_dat.37.html:1:1]
 1 | <!doctype html><html c=d><body></html><html a=b>
   :                ^^^^^^^^^^^^^^^^^^^^^^^
   `----
  x Element
   ,-[$DIR/tests/html5lib-tests-fixture/tests19_dat.37.html:1:1]
 1 | <!doctype html><html c=d><body></html><html a=b>
   :                ^^^^^^^^^^^^^^^^^^^^^^^
   `----
  x Attribute
   ,-[$DIR/tests/html5lib-tests-fixture/tests19_dat.37.html:1:1]
 1 | <!doctype html><html c=d><body></html><html a=b>
   :                      ^^^
   `----
  x Attribute
   ,-[$DIR/tests/html5lib-tests-fixture/tests19_dat.37.html:1:1]
 1 | <!doctype html><html c=d><body></html><html a=b>
   :                                             ^^^
   `----
  x Child
  x Element
  x Child
   ,-[$DIR/tests/html5lib-tests-fixture/tests19_dat.37.html:1:1]
 1 | <!doctype html><html c=d><body></html><html a=b>
   :                          ^^^^^^
   `----
  x Element
   ,-[$DIR/tests/html5lib-tests-fixture/tests19_dat.37.html:1:1]
 1 | <!doctype html><html c=d><body></html><html a=b>
   :                          ^^^^^^
   `----
