import re

def find_words(filename, letters):
    words = [line for line in open(filename)]
    words = [w[:len(w)-1] for w in words if re.match(r'^([%s]+)\n' % letters, w)]
    max_length = max([len(w) for w in words])
    words = [w for  w in words if len(w) == max_length]
    for w in words:
        print w

if __name__ == "__main__":
    import sys

    if len(sys.argv) < 3:
        print 'Usage: scrabble.py dictionary [letter... ]'
        sys.exit()

    find_words(sys.argv[1], str.join('', sys.argv[2:]))