Note
重 is read chóng ('repeat / again') here, not zhòng ('heavy').
重码 is a key concept when discussing Chinese input methods (
输入法) - pinyin produces lots of
重码 (e.g. shi gives
是、
时、
十、
市...) which is why you need a candidate list, while shape-based methods like Wubi (
五笔) trade learning curve for fewer collisions.
