.subckt NR1 a b z vdd vdds gnd gnds  ds=1
Xpmos1 vdd a st vdds pt_cs w=4*ds*Awd#
Xpmos2 st  b  z vdds pt_cd w=4*ds*Awd#
Xnmos1 gnd a  z gnds nt_st w=ds*Awd#
Xnmos2 gnd b  z gnds nt_st w=ds*Awd#
.ends

.subckt NR4 a b z vdd vdds gnd gnds  ds=4
Xpmos1 vdd a st vdds pt_cs w=4*ds*Awd#
Xpmos2 st  b  z vdds pt_cd w=4*ds*Awd#
Xnmos1 gnd a  z gnds nt_st w=ds*Awd#
Xnmos2 gnd b  z gnds nt_st w=ds*Awd#
.ends