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: sevenseveneightoneseven

Output: 77817


Input: Consider Input: zerosevensixnineeightnineseveneight

Output: 07698978


Input: Consider Input: threesixninefivefivetwoeightsixtwonineseven


Output: 36955286297