To write the Malayalam Sign Virama symbol ് on keyboard using ALT codes; ALT+3405, just hold down the ALT key while typing the alt key code 3405. You have to use the numeric keypad of your keyboard. Ifᩚᩚᩚᩚᩚᩚᩚᩚᩚ𒀱ᩚᩚᩚ you don not have numeri♔c keypad, hold down the Fn and ALT keys while typing the alt code number.