Write a program that first reads in the name of an input file and then reads the file using the csv. reader() method. The file contains a list of words separated by commas. Your program should output the words and their frequencies (the number of times each word appears in the file) without any duplicates. Ex: If the input is:

input1.csv
and the contents of input1.csv are:

hello, cat, man, hey, dog, boy, Hello, man, cat, woman, dog, Cat, hey, boy
the output is:

hello 1
cat 2
man 2
hey 2
dog 2
boy 2
Hello 1
woman 1
Cat 1
Note: There is a newline at the end of the output, and input1.csv is available to download.