NSRegularExpression

	NSString *myString = @"NSString Is A Test for NSRegularExpression";
	
	NSError *error = NULL;
	NSRegularExpression *regex = [NSRegularExpression         
								  regularExpressionWithPattern:@"(NS|UI)+(\w+)"
								  options:NSRegularExpressionCaseInsensitive
								  error:&error];
	[regex enumerateMatchesInString:myString options:0 range:NSMakeRange(0, [myString length]) usingBlock:^(NSTextCheckingResult *match, NSMatchingFlags flags, BOOL *stop){
		NSLog(@"Text Range %@", match.range);
		NSLog(@"Text %@", [myString substringWithRange:match.range]);
	}];

NSStringFromRange(match.range)