coverting mobile digits to alphabets in msging

string
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#1

write a program like in a mobile there are digit 1 to 9,in msging
when we press 2 it prints a and when we press two times it prints b and also other digits as it…
then write a program in which it accepts numbers and return characters
example
4442626266
will return i am aman

logic:
444=i
2=a
6=m…