nltk.ImmutableMultiParentedTree.left_siblings¶
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ImmutableMultiParentedTree.
left_siblings
()¶ A list of all left siblings of this tree, in any of its parent trees. A tree may be its own left sibling if it is used as multiple contiguous children of the same parent. A tree may appear multiple times in this list if it is the left sibling of this tree with respect to multiple parents.
Type: list(MultiParentedTree)