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:
twoeightninethreethreethreefiveone

Ex Output:
28933351


Ex Input:
onetwosevenfourfivenine

Ex Output:
127459


Ex Input:
foursixthreefoureighteightsix

Ex Output:

4634886