What are the coordinates for the turtle's shell?

The coordinates for the turtle's shell are:

• (-8;-3)
• (-10;-2)
• (-12;-2)
• (-14;-4)
• (-12;-5)
• (-6;-5)
• (-6;-6)
• (-7;-6)
• (-8;-7)
• (-5;-7)
• (-4;-6)
• (-4;-5)
• (3;-5)
• (3;-6)
• (2;-6)
• (1;-7)
• (4;-7)
• (5;-6)
• (5;-5)
• (7;-5)
• (9;-4)
• (11;-2)
• (9;-2)
• (8;-1)
• (7;2)
• (4;4)
• (2;5)
• (-1;5)
• (-4;3)
• (-6;1)
• (-7;-2)
• (-8;-3)
• (-6;-4)
• (5;-4)
• (8;-3)
• (9;-2)
• (5;-2)
• (5;-4)
• (4;-4)
• (4;-2)
• (1;-2)
• (1;-4)
• (-1;-4)
• (-1;-2)
• (-4;-2)
• (-4;-4)
• (-5;-4)
• (-5;-2)
• (-7;-2)