So 4A/4P, 1E, 2S?
EDIT: SBS1977B has been removed from 119 fleet in sgwiki.
I think the shifts still stay the same
maybe except for the buses
4A/4P(include one of the A/P from Sv 578), 1 E, 1 S
Sv 119 does not need to have 5 buses running around during night
time off-peak