How to apply corner radius to rectangles drawn by UIBezierPath

Corner radius for all 4 edges:

UIBezierPath* rectanglePath = [UIBezierPath bezierPathWithRoundedRect: CGRectMake(x,y,width,height) cornerRadius: 11];
[UIColor.grayColor setFill];
[rectanglePath fill];

Corner radius for top-left edge:

UIBezierPath* rectanglePath = [UIBezierPath bezierPathWithRoundedRect: CGRectMake(x,y,width,height) byRoundingCorners: UIRectCornerTopLeft cornerRadii: CGSizeMake(11, 11)];
[rectanglePath closePath];
[UIColor.grayColor setFill];
[rectanglePath fill];

Corner radius for top-right edge:

UIBezierPath* rectanglePath = [UIBezierPath bezierPathWithRoundedRect: CGRectMake(x,y,width,height) byRoundingCorners: UIRectCornerTopRight cornerRadii: CGSizeMake(11, 11)];
[rectanglePath closePath];
[UIColor.grayColor setFill];
[rectanglePath fill];

corner radius for bottom-left edge:

UIBezierPath* rectanglePath = [UIBezierPath bezierPathWithRoundedRect: CGRectMake(x,y,width,height) byRoundingCorners: UIRectCornerBottomLeft cornerRadii: CGSizeMake(11, 11)];
[rectanglePath closePath];
[UIColor.grayColor setFill];
[rectanglePath fill];

corner radius for bottom-right edge:

UIBezierPath* rectanglePath = [UIBezierPath bezierPathWithRoundedRect: CGRectMake(x,y,width,height) byRoundingCorners: UIRectCornerBottomRight cornerRadii: CGSizeMake(11, 11)];
[rectanglePath closePath];
[UIColor.grayColor setFill];
[rectanglePath fill];

corner radius for bottom edges:

UIBezierPath* rectanglePath = [UIBezierPath bezierPathWithRoundedRect: CGRectMake(x,y,width,height) byRoundingCorners: UIRectCornerBottomLeft | UIRectCornerBottomRight cornerRadii: CGSizeMake(11, 11)];
[rectanglePath closePath];
[UIColor.grayColor setFill];
[rectanglePath fill];

corner radius for top edges:

UIBezierPath* rectanglePath = [UIBezierPath bezierPathWithRoundedRect: CGRectMake(x,y,width,height) byRoundingCorners: UIRectCornerTopLeft | UIRectCornerTopRight cornerRadii: CGSizeMake(11, 11)];
[rectanglePath closePath];
[UIColor.grayColor setFill];
[rectanglePath fill];

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