In this task you will be given a string that only contains single digit numbers spelled out. The input string will not contain spaces between the different numbers. Your task is to return the number that the string spells out. The string will spell out each digit of the number for example '1726' will be 'oneseventwosix' instead of 'one thousand seven hundred six'.

Input: Consider Input: sevenfourzerofiveseven

Output: 74057


Input: Consider Input: threefoursixfivenine

Output: 34659


Input: Consider Input: zeroonesixtwoeightfourtwothree


Output: 01628423