Estimating syllables

Main.cs

public int numberOfSyllables (String word)
{
  int syllabeleCount = 0;
	bool lastWasVowel = false;
	string lowerCase = word.ToLower ().Replace ("ome", "um").Replace ("ime", "im").Replace ("imn", "imen").Replace ("ine", "in").Replace ("ely", "ly").Replace("ure", "ur").Replace("ery", "ry");
	for (int n = 0; n < lowerCase.Length; n++) {
		if (isVowel (lowerCase [n])) {
			if (!lastWasVowel)
				syllabeleCount++;
			lastWasVowel = true;
		} else {
			lastWasVowel = false;
		}
	}
	if (lowerCase.EndsWith ("ing") || lowerCase.EndsWith ("ings")) {
		if (lowerCase.Length > 4 && isVowel (lowerCase [lowerCase.Length - 4]))
			syllabeleCount++;
	}
	if (lowerCase.EndsWith ("e") && !lowerCase.EndsWith("le")) {
		syllabeleCount--;
	}
	if (lowerCase.EndsWith ("es")) {
		if (lowerCase.Length > 4 && isVowel(lowerCase[lowerCase.Length - 4]))
			syllabeleCount--;
	}
	if (lowerCase.EndsWith ("e's")) {
		if (lowerCase.Length > 5 && isVowel(lowerCase[lowerCase.Length - 5]))
			syllabeleCount--;
	}
	if (lowerCase.EndsWith ("ed") && !lowerCase.EndsWith ("ted") && !lowerCase.EndsWith ("ded")) {
		syllabeleCount--;
	}
	return syllabeleCount > 0 ? syllabeleCount : 1;
}

public bool isVowel (char c)
{
	return c == 'a' || c == 'e' || c == 'i' || c == 'o' || c == 'u' || c == 'y';
}

Thanks. Helpful little routine.