func isMatchPattern(s string) bool {
	return len(s) > 2 && s[0] == '<' && s[len(s)-1] == '>'
}
func isMatchPattern(s string) bool {
	return len(s) > 2 && s[0] == '<' && s[len(s)-1] == '>'
}
// isMatchPattern see if given string is match pattern.