C[4, −4]

Y = x/3 – 2

6 + 9t

Excluded because x is even when t is even

15 + 18t

(3(15 + 18t) + 1)/2 = 23 + 27t

Excluded when t is even

33 + 36t

(3(33 + 36t) + 1)/4 = 25 + 27t

Excluded when t is even

69 + 72t

(3(69 + 72t) + 1)/8 = 26 + 27t

Excluded when t is odd

69 + 144t

(3(69 + 144t) + 1)/16 = 13 + 27t

Excluded when t is even

213 + 288t

(213 + 288t)/3 – 2 = 69 + 96t

Star conversion