# Write a Python program to Specific Characters Frequency in String List 
 # Python3 code to demonstrate working of 
# Specific Characters Frequency in String List
# Using join() + Counter()
from collections import Counter
  
# initializing lists
test_list = ["geeksforgeeks is best for geeks"]
  
# printing original list
print("The original list : " + str(test_list))
  
# char list 
chr_list = ['e', 'b', 'g']
  
# dict comprehension to retrieve on certain Frequencies
res = {key:val for key, val in dict(Counter("".join(test_list))).items() if key in chr_list}
      
# printing result 
print("Specific Characters Frequencies : " + str(res))