Doesn't look like W-patterns from LPL at all - looks like one DSA based aircraft:
Morning rotation: DSA-PRG-DSA (days -2--5-7), DSA-FAO-DSA (days 1-34-6-)
Afternoon rotation: DSA-AMS-DSA (daily)
Evening rotation: DSA-BCN-DSA (days 1-3-5-7), DSA-PMI-DSA (days -2-4-6-)