40 parts.

• LEGO Brick Curved 2 × 1 No Studs [1/2 Bow] (11477)LEGO
• LEGO Brick Curved 2 × 2 × 2/3 (15068)LEGO
• LEGO Brick Curved 2 × 2 × 2/3 Two Studs and Curved Slope End (47457)LEGO
• LEGO Brick Curved 2 × 4 × 2/3 No Studs, with Bottom Tubes (88930)LEGO
• LEGO Brick Curved 3 × 1 No Studs (50950)LEGO
• LEGO Brick Curved 3 × 2 No Studs (24309)LEGO
• LEGO Brick Curved 4 × 1 Double with No Studs (93273)LEGO
• LEGO Brick Curved 4 × 1 No Studs [Stud Holder with Symmetric Ridges] (11153)LEGO
• LEGO Brick Curved 4 × 2 No Studs (93606)LEGO
• LEGO Brick Curved 6 × 1 (42022)LEGO
• LEGO Brick Curved 6 × 2 (44126)LEGO
• LEGO Brick Curved 8 × 2 No Studs (42918)LEGO
• LEGO Curved SlopeLEGO
• LEGO SlopeLEGO
• LEGO Slope 18° 4 × 1 (60477)LEGO
• LEGO Slope 18° 4 × 2 (30363)LEGO
• LEGO Slope 30° 1 × 1 × 2/3 (Cheese Slope) (54200)LEGO
• LEGO Slope 30° 1 × 2 × 2/3 (85984)LEGO
• LEGO Slope 30° 1 × 3 × 2/3 (7825)LEGO
• LEGO Slope 30° 1 × 4 × 2/3 (7835)LEGO
• LEGO Slope 33° 3 × 1 (4286)LEGO
• LEGO Slope 33° 3 × 2 (3298)LEGO
• LEGO Slope 33° 3 × 3 (4161)LEGO
• LEGO Slope 33° 3 × 4 (3297)LEGO
• LEGO Slope 33° 3 × 6 No Inner Walls (58181)LEGO
• LEGO Slope 45° 2 × 1 with Bottom Pin (3040b)LEGO
• LEGO Slope 45° 2 × 2 (3039)LEGO
• LEGO Slope 45° 2 × 3 (3038)LEGO
• LEGO Slope 45° 2 × 4 (3037)LEGO
• LEGO Slope 45° 2 × 6 (23949)LEGO
• LEGO Slope 45° 2 × 8 (4445)LEGO
• LEGO Slope 65° 2 × 1 × 2 (60481)LEGO
• LEGO Slope 65° 2 × 2 × 2 with Bottom Tube (3678b)LEGO
• LEGO Slope 75° 2 × 1 × 3 with Hollow Stud (4460b)LEGO
• LEGO Slope 75° 2 × 2 × 3 [Solid Studs] (98560)LEGO
• LEGO Slope Inverted 33° 3 × 1 with Internal Stopper and No Front Stud Connection (4287c)LEGO
• LEGO Slope Inverted 33° 3 × 2, Connections between Studs, Ovoid Bottom Pin (3747b)LEGO
• LEGO Slope Inverted 45° 2 × 1 (3665)LEGO
• LEGO Slope Inverted 45° 2 × 2 [Ovoid Bottom Pin, Bar-sized Stud Holes] (3660)LEGO
• LEGO Slope Inverted 75° 2 × 1 × 3 (2449)LEGO