import sys
import os


# filename = sys.argv[1]
# path = os.path.join(os.getcwd(), filename)
# path = os.path.join(os.getcwd(), 'test1.arg')
# file = open(path, 'r').readlines()


class FSA():
    def __init__(self):
        self.initial_state = '0'
        self.current_letter = None
        self.current_state = self.initial_state
        self.acceptance_state = '7'
        self.alphabet = ['1','2','3','4','5','6','7','8','9','0', '.',' ', 'x', 'r']
        self.transition_function = [{'in': '0', 'letter': '1', 'out': '1'},
            {'in': '1', 'letter': '9', 'out': '2'},
            {'in': '2', 'letter': ['1','2','3','4','5','6','7','8','9','0'], 'out': '3'},
            {'in': '3', 'letter': ['1','2','3','4','5','6','7','8','9','0'], 'out': '4'},
            {'in': '4', 'letter': ' ', 'out': '5'},
            {'in': '5', 'letter': 'r', 'out': '6'},
            {'in': '6', 'letter': '.', 'out': '7'},
            {'in': ['0', '1', '2', '3', '4', '5', '6'], 'letter': 'x', 'out': '0'}]

    def add_letter_to_alphabet(self, letter):
        self.alphabet.add(letter)

    def add_transition_to_transition_function(self, input_state, output_state, letter):
        obj = {'in': input_state, 'letter': letter, 'out': output_state}
        self.transition_function.append(obj)
        # add letter to alphabet

    def specify_end_state(self, end_state):
        self.end_state = end_state

    def check_text(self, text):
        for letter in text:
            if letter not in self.alphabet:
                text = text.replace(letter, 'x')

        for letter in text:
            found_function = None

            for func in self.transition_function:
                if self.current_state in func['in'] and letter in func['letter']:
                    found_function = func

            if not found_function:
                self.current_state = '0'
            else:
                self.current_state = found_function['out']

            if self.current_state == self.acceptance_state:
                return 'YES'

        return 'NO'

FSA = FSA()

lines = ['Firma powstała w 1992 r., z połączenia Authorware, Inc. (twórców pakietu Authorware) i MacroMind-Paracomp (producenta Macromind Director). W 1999 r. Macromedia zakupiła firmę Allaire i jej biznesowe oprogramowanie sieciowe, w tym edytor HomeSite. W 2003 zakupiono eHelp Corporation, produkującą oprogramowanie do tworzenia systemów pomocy, jak RoboHelp, RoboDemo (obecnie Captivate) i RoboInfo.']
for line in sys.stdin:
    line = line.rstrip('\n')
    FSA.current_state = FSA.initial_state
    print(FSA.check_text(line))