how to sort a list alphanumerically with bus names in descending order using skill

I have a list such as :  mylist=list("VDD" "GND" "ddd[0]" "ddd[1]" "ddd[2]" "bb[0]" "bb[1]" "bb[2]")

I try ==>  mylist=sort(mylist 'alphalessp)

the list become ==> ("GND" "VDD" "bb[0]" "bb[1]" "bb[2]" "ddd[0]" "ddd[1]" "ddd[2]")

I want mylist become ("GND" "VDD" "bb[2]" "bb[1]" "bb[0]" "ddd[2]" "ddd[1]" "ddd[0]"). The elements of the list

are sorted alphanumerically, but the bus names are sorted in descending order instead.

Thanks...