#!/usr/bin/env python

import sys

import empty

def csv_new():
	e = empty.new()
	e.in_quote = False
	e.s = ''
	e.lst = [ [] ]

	def flush():
		s = e.s
		e.s = ''
		if len( s ) >= 2 and s[ 0 ] == '"' and s[ -1 ] == '"':
			s = s[ 1 : -1 ]
		s = s.replace( '""', '"' )
		e.lst[ -1 ].append( s )

	def add_c( c ):
		if c == '\r':
			return  # (^^;
		if not e.in_quote and c in ',\n':
			flush()
			if c == '\n':
				e.lst.append( [] )
			return
		e.s += c
		if c == '"':
			e.in_quote = not e.in_quote

	def add_s( s ):
		s = s.strip()
		for c in s:
			add_c ( c )

	return empty.add( e, locals() )

if __name__ == "__main__":
	f = sys.stdin
	s = f.read()
	csv = csv_new()
	csv.add_s( s )
	csv.flush()
	print( csv.lst )

# EOF