K_RE_PATTERN_ARABIC = "/(
\xD8[\x80-\x83\x8B\x8D\x9B\x9E\x9F\xA1-\xBA] # AL
| \xD9[\x80-\x8A\xAD-\xAF\xB1-\xBF] # AL
| \xDA[\x80-\xBF] # AL
| \xDB[\x80-\x95\x9D\xA5\xA6\xAE\xAF\xBA-\xBF] # AL
| \xDC[\x80-\x8D\x90\x92-\xAF] # AL
| \xDD[\x8D-\xAD] # AL
| \xDE[\x80-\xA5\xB1] # AL
| \xEF\xAD[\x90-\xBF] # AL
| \xEF\xAE[\x80-\xB1] # AL
| \xEF\xAF[\x93-\xBF] # AL
| \xEF[\xB0-\xB3][\x80-\xBF] # AL
| \xEF\xB4[\x80-\xBD] # AL
| \xEF\xB5[\x90-\xBF] # AL
| \xEF\xB6[\x80-\x8F\x92-\xBF] # AL
| \xEF\xB7[\x80-\x87\xB0-\xBC] # AL
| \xEF\xB9[\xB0-\xB4\xB6-\xBF] # AL
| \xEF\xBA[\x80-\xBF] # AL
| \xEF\xBB[\x80-\xBC] # AL
| \xD9[\xA0-\xA9\xAB\xAC] # AN
)/x"
K_RE_PATTERN_RTL = "/(
\xD6\xBE # R
| \xD7[\x80\x83\x86\x90-\xAA\xB0-\xB4] # R
| \xDF[\x80-\xAA\xB4\xB5\xBA] # R
| \xE2\x80\x8F # R
| \xEF\xAC[\x9D\x9F\xA0-\xA8\xAA-\xB6\xB8-\xBC\xBE] # R
| \xEF\xAD[\x80\x81\x83\x84\x86-\x8F] # R
| \xF0\x90\xA0[\x80-\x85\x88\x8A-\xB5\xB7\xB8\xBC\xBF] # R
| \xF0\x90\xA4[\x80-\x99] # R
| \xF0\x90\xA8[\x80\x90-\x93\x95-\x97\x99-\xB3] # R
| \xF0\x90\xA9[\x80-\x87\x90-\x98] # R
| \xE2\x80[\xAB\xAE] # RLE & RLO
)/x"
