TIB1138M split shift right? always see this bus at Yishun in the
afternoon..
Many 851 bendies operate 856/969 in the morning (that's why
morning very few bendies).
They will come back to 851 and go for one full round, from
Yishun to Bukit Merah then back to Yishun again. 4pm to 7pm is the
time where the no. of 851 bendies is the largest.
Then I think sleep already, they dun operate BM-bound at night
(I guess?)