'''string="accenture"
list1=[]
for character in string:
    list1.append(character)
    list1.append(character)
print(list1)'''

"""string="accenture"
list1=[]
for character in string:
    if character not in list1:
        list1=list1+list(2*character)
print(list1)"""

"""string="accenture"
list1=[]
for character in string:
    if character not in list1:
        list1.extend(2*character)
print(list1)"""
'''
string="accenture"
list1=[]
for character in string:
    if character not in list1:
        list1.append(character)
        list1.append(character)
print(list1)'''


'''
string2="accenture"
list2=[]
for x in string2:
    if x not in list2:
        list2.append(x)
        list2.append(x)
print(list2)'''


