.SUBCKT ND2X1 VDD OUT VSS NWELL B A BULK
M$1 OUT A VDD NWELL PMOS L=0.25U W=1.5U
M$2 OUT B VDD NWELL PMOS L=0.25U W=1.5U
M$3 1 A VSS BULK NMOS L=0.25U W=0.95U
M$4 OUT B 1 BULK NMOS L=0.25U W=0.95U
.ENDS ND2X1