I now have a string  5900A7395900A7545900A414 . I want to divide this string into three separate strings  5900A739 ,  5900A754 , and  5900A414  how can I use capture groups to implement the above requirements? Note that this is just an example, the actual situation is more complicated than this, the length of the same string is not fixed. For example, in the above example, the same string is  5900A , or it may be  5900A7 , and the length of the following different strings is not fixed. Could you tell me how to intercept a separate string? 
 has tried to capture groups himself, but can only capture fixed-length characters. Thank you in advance. 

