Given a sentence in Vietnamese, generate a new Vietnamese sentence by performing small changes on the sentence. Here, make sure that the changes are semantically related and syntactically similar to the input. And the generated sentence should have high commonsense plausibility, that is to have reasonable probability of it being true.
Q: Con mắt có thể có nhiều màu sắc khác nhau.
A: 
Một chữ cái có thể có rất nhiều chữ số.