Validate Word Abbreviation With Numeric Substrings

meta Given a string word and an abbreviation abbr, check if abbr is a valid abbreviation of word. Abbreviation is made by replacing any number of non-adjacent substrings in the string with their lengths. Leading zeros are not permitted in any numeric substring in the abbreviation. Example: word = "internationalization", abbr = "i12iz4n" should return true as it is a valid abbreviation. Implement a function to perform this check. Example Input internationalization i12iz4n