Complex sentence: The agreement stated that AeroLitoral, would provide service in the routes on the South East of the country on behalf of Aerocaribe the contract covered the wet lease of 3 Saab 340B's operating the routes to Mérida, Tuxla Gutierrez and the shuttle between Cancún and Cozumel.
Split into simpler sentences: The agreement stated that AeroLitoral would provide service in the routes on the South East of the country on behalf of Aerocaribe. The contract covered the wet lease of 3 Saab 340B's operating the routes to Mérida, Tuxla Gutierrez, and the shuttle between Cancún and Cozumel.