Original sentence: Big Five law firms (South Africa).Big Six law firms.Seven Sisters (law firms).White shoe firm
Edited sentence: Big Five, referring to the five largest South African law firms.Big Five: the five largest Singapore law firms, comprising (in order of headcount).Big Six, referring to six Australian law firms perceived to be of the top tier.Rajah & Tann, Allen & Gledhill, WongPartnership, Rodyk & Davidson and Drew & Napier.Seven Sisters, referring to the seven Canadian law firms considered to be the top tier.Silver Circle, referring to other elite English law firms considered to be outside the Magic Circle.White shoe firms or Charmed Circle, referring to law firms perceived to be the leading New York City law firms