Mask PWD

hello, i need help with mask hashcat-cli64

i need to know how to add tables like Abc123 , abc123,  ,Abcdef , abcdef ,

Built-in charsets
   ?l = abcdefghijklmnopqrstuvwxyz
   ?u = ABCDEFGHIJKLMNOPQRSTUVWXYZ
   ?d = 0123456789
   ?s =  !"#$%&'()*+,-./:;<=>?@[\]^_`{|}~
   ?a = ?l?u?d?s
   ?b = 0x00 - 0xff


will be like this Abc123  (?u?l?l?d?) or what ??