docs: private void normalise(char[] c) {
  		for (int i = 0; i< c.length; i++) {
  			if (c[i] == 12288) {
  				c[i] = (char) 32;
  				continue;
  			}else if (c[i]> 65280&& c[i]< 65375){
  				c[i] = (char) (c[i] - 65248);			
  			}
  			else if(c[i] > 64 && c[i] < 91){
  				c[i] += 32;
  			}
  			else{
  				char cc = l2s.get(c[i]);
  				if (cc != 0) {   
  					c[i] = cc;   
  				} 
  			} 
  		}
  	}