Create a black and white vector illustration of the Grinch character wearing a Santa hat and Santa outfit, standing next to or leaning against a large decorative letter 'O'. The letter O should be decorated with snowflakes. The Grinch should have his characteristic mischievous expression. Style: clean vector art, black and white line art, suitable for coloring book or vinyl cutting. Simple, bold outlines with clear details. The composition should be festive and Christmas-themed.