import sys

fin = open(sys.argv[1])
fout = open(sys.argv[1]+'.nonum',"w")
for l in fin.xreadlines():
    words = l.split()
    for w in words:
	if w[0] != '{':
	    print >>fout,w.strip('[],.;:\'?!()').lower()
fin.close()
fout.close()