A-25

Letter  Nun is belongs to connecting group of letters -  this letter may be connected from both side.   The close similar sound in English are "  in  etc.   

                Independent
                 Initial
                Middle
                 Final    

Similar shape group      

Letter Nun  is pronounced when the tip of the tongue only touch the gums of the lateral incisors and canines ( but will not touch the first molars)

The Letter Noon