_ Q$$$$$$$ $$$$$$$$$$$ s ss $$$$$$$$$$$ $$$$$$$$ $$$$$$ $$$$$$$$$$ Q$$$$$$$$$ $$$$$$$ $$$$$$$$$ $ Q $$$$$$$$ $$$$$$ $$$$$$$$$ Q$$Q $$$$$$$ $$$$$$ _ $$ 4$$$$ s s $ 4$$$ $$$ s Q$$$7 $$$$ $$$ $$$$ $$$$$b sQ$$ $$$ $$$$ QQ$( $$$ $$$$$$ $$$ $$$ $$$$X $$$$$ $$$ $$$$X $$$$ $$$$ $$$$