'''
Created on Sep 24, 2017

@author: Susan
'''
def isWordOk(word):
    for ch in word:
        if ch in "0123456789:-":
            return False
    return True

def computeSubjects(phrase):
    alist = phrase.split()
    answer = []
    for word in alist:
        if isWordOk(word):
            answer.append(word)
    return " ".join(answer)
        

if __name__ == '__main__':
    phrase = "CompSci 101 TuTh1:25pm Econ 101 MW10:05am"
    ans = computeSubjects(phrase)
    print phrase, ans