Python code to complete:

import re
def sget(string):
# write your code here

Complete the function sget that will search an input string and find all strings beginning with either 'c', 'd', or 'e'. From this subset of strings, a new list of strings will be returned that only contain the digits '45'.

For example, if the input string is:

s='a1234 b2345 c3456 d4567 e5678 f6789 g0000 h0001'

then the returned string will be:

['c3456', 'd4567']

Regular expressions and the findall method could prove useful for this problem.