7π6,5π6\frac{7 \pi}{6}, \frac{5 \pi}{6}67π,65π
13π6,15π6\frac{13 \pi}{6}, \frac{15 \pi}{6}613π,615π
8π6,9π6\frac{8 \pi}{6}, \frac{9 \pi}{6}68π,69π
13π6,11π6\frac{13 \pi}{6}, \frac{11 \pi}{6}613π,611π