[ UpperCase c;
   switch (c) {
     'a' to 'z':
       c = c - 32;
     201, 203, 211, 213, 220:
       c++;
     215, 216:
       c = c + 2;
     155 to 157, 164 to 166, 205 to 207:
       c = c + 3;
     181 to 185, 191 to 195:
       c = c + 5 ;
     169 to 174:
       c = c + 6;
   }
   return c;
];