Regex to insert \n after every character in string

VerticalText

NSString *horizontalText = @"horizontal text";
NSRegularExpression *regex = [NSRegularExpression regularExpressionWithPattern:@"(.)" options:NSRegularExpressionCaseInsensitive error:nil];
NSString *verticalText = [regex stringByReplacingMatchesInString:horizontalText options:0 range:NSMakeRange(0, horizontalText.length) withTemplate:@"$1\n"];