In the New QuanPin and the New ShuangPin input methods, the candidates that you select are moved to the start of the list to facilitate repeated use.
Select the input method.
Follow the steps in the procedure How to Select an Input Method to select the input method.
Type sh yi.
Notice the order of the five available candidates.
Select the fifth candidate.
Type sh yi again.
Notice that the fifth candidate has moved to the first position because you previously selected it. Frequently used candidates are promoted for faster selection.