Perform the Aho-Corasick search procedure using the provided input string.

Return an iterator of tuples (end_index, value) for keys found in string where:

• end_index is the end index in the input string where a trie key string was found.
• value is the value associated with the found key string.

The start and end optional arguments can be used to limit the search to an input string slice as in string[start:end].

The ignore_white_space optional arguments can be used to ignore white spaces from input string.