What is the verb phrase in sentence We could never have moved that tree by ourselves?

The verb phrase in the sentence "We could never have moved that tree by ourselves" is "could never have moved".

Here's why:

* "Could" is a modal auxiliary verb, indicating ability or possibility.

* "Never" is an adverb modifying the verb phrase.

* "Have moved" is the past participle of the verb "move", forming the perfect tense.

Together, these words create the verb phrase that describes the action of moving the tree.