The cedars occur in association with the hardwoods and have become established along the canyon banks, in the canyon valleys, and along parts of the river bottom.
(The cedars; occur; L:in association with the hardwoods) (The cedars; have become established; L:along the canyon banks; L:in the canyon valleys)
The cedars The cedars
occur have become established
L:in association with the hardwoods
L:along the canyon banks L:in the canyon valleys