fname = raw_input("Enter file name: ")
if len(fname) < 3 or fname == "" : 
    fname = "mbox-short.txt"
fhandle = open(fname)
 
uname = list()
counts = dict()
 
for line in fhandle :
    line = line.rstrip()
    if line.startswith("From ") :
        line = line[4:]
        uname = line.split()
        del uname[1:]
 
        for un in uname :
            counts[un] = counts.get(un,0) + 1
print
#print counts
 
for value, key in sorted(counts.items()) :
    print value, key

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