,NEGA;N " ,EXAMPLES #A4 ,! NEGA;N ( ;P1 R1D N ;P1 IS WRITT5 _% @:P _: #B4 ,! NEGA;N ( ! NEGA;N ( ;Q1 R1D N N ;Q1 IS WRITT5 _% @:"@:Q _: #C4 ,! 4JUNC;N 2T ! NEGA;N ( ;P & ;Q1 R1D N ;P OR ;Q1 IS WRITT5 _% @:P@+Q _: #D4 ,! NEGA;N ( ! 3JUNC;N ( ;P & ;Q1 R1D N OP5 P>5!SES ;P & ;Q CLOSE P>5!SIS IS WRITT5 _% @:(P@%Q) _: #A