Yesterday:
Khatib 
Bishan: 225/226
Bishan Sembawang: 225/226
Sembawang Khatib: 113/114
When i reached Khatib's and Bishan's platform, 113/114
closed its doors in front of me! If I waited a while more at
Sembawang, I would have taken 225/226 on all 3 rides as 225/226 is
just after 113/114.