These two buses Namely X and Z. They both end at the same
interchanges.One in the Central and another in the North East part
of Singapore.
X and Z duplicate for 3 Stops after leaving the interchange. X
will turn Right and Z will turn left. The two services do meet to
DUPLICATE each other till they reach the other interchange.
Name the two services and the interchanges. Locate from where to
where they duplicate each other.
