Input (grade 12): There are ferry routes between Patras and Igoumenitsa, Greece, and Brindisi and Ancona, Italy, that cross the east and north of the Ionian Sea, and from Piraeus westward.
Output (grade 10): There are ferry routes between Patras, Greece and Brindisi and Ancona, Italy, that cross the east and north of the Ionian Sea, and from Piraeus westward.