The mapping of numbers to letters (just like phone buttons) is given below. Note that 1 does not match any letter.

Given a vector containing the numbers 2-9 with the R script you will write, print all possible letter combinations that the number can represent. You can compose the answer in any order.

For example: v=[2.7] output: aj ak al bj

v=[6,4,5] output: mgj mhk

\( 1 \longdiv { 2 } \) 3 4 6 7 8 9 \#