Replace each letter of a word with its numerical equivalent--1 for a, 2 for b, ..., 26 for z. The resulting sequence of digits is a numerical palindrome if it reads identically left to right and right to left. For example, the word cam is a numerical palindrome as follows:
cam
3113
Find the ONLY TWO COMMON 6-letter English words that form numerical palindromes. (Incidentally, I believe there are no common words longer than 6 letters that form numerical palindromes.)