The original writers for the series left by the fourth season.
The writer had left after college, to attend graduate school in England.
Some were clearly parts of prayers, left to encourage either the writer or others that followed.
By Season 4, the original writers had left the series.
Some writers became mad of these subjects and leaving all other social issues.
The writer must leave the sitting room and travel abroad into the active, busy world.
By and large, though, a writer leaves a work the way it is for a reason.
Eventually, without production getting under way, the director and the writers left the project.
Whatever has attracted them to the state, writers have left their mark on more than just paper.
But by using has rather than had, the writer leaves it neutral or open.