stri=input("enter a string") 
length=len(stri)
stri2=""
i=-1
while i>=-length:
	stri2=stri2+stri[i]
	i-=1
print(stri2)

fa66330380a01ea3235f28af9cd2eb0f856375c6
<mask token>

<mask token>
while i >= -length:
    stri2 = stri2 + stri[i]
    i -= 1
print(stri2)

stri = input('enter a string')
length = len(stri)
stri2 = ''
i = -1
while i >= -length:
    stri2 = stri2 + stri[i]
    i -= 1
print(stri2)

stri=input("enter a string") 
length=len(stri)
stri2=""
i=-1
while i>=-length:
	stri2=stri2+stri[i]
	i-=1
print(stri2)
