Complex sentence: On Sundays there are 3tph to, 1tph to and 1tph to and (train divides at); the trains to Ore and to Portsmouth and Littlehampton run separately.
Split into simpler sentences: On Sundays there are 3tph to, 1tph to and 1tph to and (train divides at). Trains to Ore and to Portsmouth and Littlehampton run separately.