Mapped string problem

#1

sir i m able to solve this problem ,please give me hint

#2

Let’s assume the input string is “112”. Our task is to print the corresponding alphabets of all the numbers in that input string.
The numbers we can get from the input string are :
1
11
12
2
So we have to print :
a
k
l
b
not in that particular order.

#3

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