isikukood = input()
count = 0
for i in isikukood:
    if i in '0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15':
        count = count + 1

kood1 = int(isikukood[0])
try:
    kood2 = int(isikukood[1])
except IndexError:
    pass
try:
    kood3 = int(isikukood[2])
except IndexError:
    pass
try:
    kood4 = int(isikukood[3])
except IndexError:
    pass
try:
    kood5 = int(isikukood[4])
except IndexError:
    pass
try:
    kood6 = int(isikukood[5])
except IndexError:
    pass
try:
    kood7 = int(isikukood[6])
except IndexError:
    pass
try:
    kood8 = int(isikukood[7])
except IndexError:
    pass
try:
    kood9 = int(isikukood[8])
except IndexError:
    pass
try:
    kood10 = int(isikukood[9])
except IndexError:
    pass
try:
    kood11 = int(isikukood[10])
except IndexError:
    pass

try:
    supleks = kood1 * 1 + kood2 * 2 + kood3 * 3 + kood4 * 4 + kood5 * 5 + kood6 * 6 + kood7 * 7 + kood8 * 8 + kood9 * 9 + kood10 * 1
except NameError:
    pass

try:
    supleks2 = supleks % 11
except IndentationError and NameError:
    pass

try:
    supleks3 = supleks % 11 - 4
except IndentationError and NameError:
    pass

koer0 = isikukood[0] <= str(6)

try:
    koer1 = isikukood[3] <= str(1)
except IndexError and IndentationError and IndexError:
    pass

try:
    koer2 = isikukood[5] <= str(3)
except IndexError:
    pass
try:
    koer3 = int(isikukood[10]) == supleks2
except IndexError:
    pass
try:
    koer4 = int(isikukood[10]) == supleks2 - 1
except IndexError:
    pass
try:
    koer5 = int(isikukood[10]) == supleks3
except IndexError:
    pass

if count == 11 and koer3 and koer2 and koer1 and koer0:
    print ("on Eesti isikukood")
elif count == 11 and koer4 and koer2 and koer1 and koer0:
    print ("on Eesti isikukood")
elif count == 11 and koer5 and koer2 and koer1 and koer0:
    print ("on Eesti isikukood")
else:
    print ("ei ole Eesti isikukood")