I just forward these questions from my friend Dave~~
Usually, u just have to camp for these buses..... Patience is
all u need.... And, it seems like Citaro is "resting". Like what
willis_chong said.......
For SBS7888K, usually it would appear on 133..... If not,
133M... For the timings, I'm not so sure.... But, I think the 1st
trip that it would make is 133, timing is around 0710 hours[I'm not
so sure about this].
SBS9899U, SBS1688K and SBS8030L are easy catches. Just need the
Patience to "Camp" for these buses......