DEF TRUTH_TABLE3
PORT IN A
PORT IN B
PORT IN C
PORT IN D
PORT OUT Z
NET E
NET F
NET G
NET H
INST NAND1 NAND C D E
INST NAND2 NAND B E F
INST NAND3 NAND D E G
INST NAND4 NAND A G H
INST NAND5 NAND F H Z
ENDDEF