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:
sixsevenninetwofoureightfive

Ex Output:
6792485


Ex Input:
zerozeroninesixthreefour

Ex Output:
009634


Ex Input:
sixsixeightsevenzeroseven

Ex Output:

668707