As the high tide gradually falls to its lowest point, it becomes the low tide, and the cycle starts over again.
(the high tide; gradually falls; to its lowest point) (it; becomes; the low tide; T:As the high tide gradually falls to its lowest point) (the cycle; starts over; T:again)
the high tide it the cycle
gradually falls becomes starts over
to its lowest point
the low tide T:As the high tide gradually falls to its lowest point
T:again