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'.

Ex Input:
sevenfivezerofivetwoonenineseventhreetwothree

Ex Output:
75052197323


Ex Input:
zerotwoeightfournineonesevensixonezero

Ex Output:
0284917610


Ex Input:
zeroseventwofivesevenfoursevensixsixsixninezero

Ex Output:

072574766690