import sys;

input_string = sys.stdin.readline()
input_string = input_string.strip()
input_string = input_string.replace("\n",' ')
input_string = input_string.replace(".",' ')
input_array = input_string.split(" ")
_dict = { }

iter = 0
for word in input_array:
    iter += 1
    _lower = word.lower()
    _hash = ''.join(sorted(_lower))
    if not _hash in _dict:
        _dict[_hash] = { 'first':iter,
                         'words':[] }
    if not _lower in _dict[_hash]['words']:
        _dict[_hash]['words'].append(_lower)

_array = []
for _hash in _dict:
    if len(_dict[_hash]['words']) > 1:
        _array.append(_dict[_hash]);
_dict = len(_array)
_array = sorted( _array, key=lambda t: t['first'] )
for x in range(0,_dict):
    sys.stdout.write( '\n' + ' '.join( _array[x]['words'] ) )