ont idea taken from aCk - -------- $$$Sa ---------- $$$Sa -------- $$$Sa ------------------- + aS$$$ $$$$$$$ aS$$$ $$$$$$$ aS$$$ $$$$$$$ aS$$$ $$$$$$$ $$$$$$$$ $$$$$$$ $$$$$$$$ $$$$$$$ $$$$$$$$ $$$$$$$aaaaaaaaaa $$$$$$$$ $$$$$$$$ $$$$$$$$ $$$$$$$$ $$$$$$$$aaaaaaaa $$$$$$$$ $$$$$$$$ $$$$$$$$ $$$$$$$$ $$$$$$$$ aaaaaa $$$$$$$$ $$$$$$$$ $$$$$$$$ $$$$$$$$ $$$$$$$$ $$$$$$$$ $$$$$$$$ $$$$$$$$ $$$$$$$$ $$$$$$$$ $$$$$$$$ aaggggggggaaggggggggaggggggggaaggggggggaggggggggaaggggggggaggggggggaaggggggggaa $$$$$$$$ $$$$$$$$ $$$$$$$$ $$$$$$$$ $$$$$$$$ $$$$$$$$ $$$$$$$$ $$$$$$$$ $$$$$$$$ $$$$$$$$ $$$$$$$$ $$$$$$$$ $$$$$$$$ $$$$$$$$ $$$$$$$$ $$$$$$$$ $$$$$$$$ $$$$$$$$ $$$$$$$$ $$$$$$$$ $$$$$$$$ $$$$$$$$ $$$$$$$$ $$$$$$$$ $$$$$$$$ $$$$S $$$$$$$$ $$$$S $$$$$$$$ $$$$S $$$$$$$$ $$$$S - S$$$$ ---------- S$$$$ -------- S$$$$ -------- S$$$$ ------- + r u s t c o m i n g s o o n