� ��<x � TeX typewriter text CMITT �� � � � � � � � � � � � � � ; ; P [ � � � � � � � P P � � � � ( � � � � � � � � � ` r r � � � � � � � � � � � P Y � A � �� � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � P � P � P � [ � � � � � P P P [ [ P P � P P P P [ P � � � � � fb �� 8� �e � UV }& �� � � : � �� r ���H��� �� r � US UU �� � 8� s �: � �` �` fb � �� fb