phone = input("Phone: ")
digits_mapping = {
"1": "One",
"2": "Two",
"3": "Three",
"4": "Four"
}
output = ""
for ch in phone:
output += digits_mapping.get(ch, "!") + " "
print(output)
exit()
input: 1345
output:
One
One Three
One Three Four
One Three Four !
need output to show one three four !