SUI-4

There are about 22 standard Chinese characters that are spoken 'sui'. There is no predominant graphic element that would indicate that a character is spoken as 'sui'.  

岁 = years of age

她三十三岁. = Ta(1) san(1)shi(2)san(1) sui(4). = She is 33 year old.

三十岁以下 = san(1)shi(2) sui(4) yi(3)xia(4) = below 30 years of age