Four kinds of sakhas

1. Suhrid Sakha: They are older than Krishna. Balaram is the leader. They always try to protect Krishna. They consider Krishna is fit for their protection. Also they try to protect Krishna By holding arms.

2. Sadharan Sakha : They are the ordinary Sakhas, they are a little younger than Krishna, they lovingly serve Krishna by performing intimate body seva, like massage, fanning etc.

3. Priya Sakha: Sridam, Dam, Sudam and Basudam are the leaders of Priya Sakhas. Even though they are priya Sakha but Sridam is Radha’s brother therefore Krishna cannot have any madhur rasa talk with Sridam.

4. Priya narma Sakha: Subal , Arjun, Gandharva, Vasanta, Ujjal - they are leaders and are supported by Madhumangal the greedy one, and their eyes want to deliver krishna’s secret message and appointment with Radha.Krishna can have all verities of talks even madhur rasa talks with Priya narma sakhas.

Source

http://christmuslim.blogspot.com/2015/01/body-mind-intelligence-ego-spirit.html

http://christmuslim.blogspot.com/2015/01/four-types-of-friends.html