.model f_u_csa4 .inputs a[0] a[1] a[2] a[3] b[0] b[1] b[2] b[3] .outputs f_u_csa4_out[0] f_u_csa4_out[1] f_u_csa4_out[2] f_u_csa4_out[3] f_u_csa4_out[4] .names vdd 1 .names gnd 0 .names a[0] b[0] f_u_csa4_xor0 01 1 10 1 .names a[0] b[0] f_u_csa4_ha0_xor0 01 1 10 1 .names a[0] b[0] f_u_csa4_ha0_and0 11 1 .names a[1] b[1] f_u_csa4_xor1 01 1 10 1 .names a[1] b[1] f_u_csa4_fa0_xor0 01 1 10 1 .names a[1] b[1] f_u_csa4_fa0_and0 11 1 .names f_u_csa4_fa0_xor0 f_u_csa4_ha0_and0 f_u_csa4_fa0_xor1 01 1 10 1 .names f_u_csa4_fa0_xor0 f_u_csa4_ha0_and0 f_u_csa4_fa0_and1 11 1 .names f_u_csa4_fa0_and0 f_u_csa4_fa0_and1 f_u_csa4_fa0_or0 1- 1 -1 1 .names a[2] b[2] f_u_csa4_xor2 01 1 10 1 .names a[2] b[2] f_u_csa4_fa1_xor0 01 1 10 1 .names a[2] b[2] f_u_csa4_fa1_and0 11 1 .names f_u_csa4_fa1_xor0 f_u_csa4_fa0_or0 f_u_csa4_fa1_xor1 01 1 10 1 .names f_u_csa4_fa1_xor0 f_u_csa4_fa0_or0 f_u_csa4_fa1_and1 11 1 .names f_u_csa4_fa1_and0 f_u_csa4_fa1_and1 f_u_csa4_fa1_or0 1- 1 -1 1 .names a[3] b[3] f_u_csa4_xor3 01 1 10 1 .names a[3] b[3] f_u_csa4_fa2_xor0 01 1 10 1 .names a[3] b[3] f_u_csa4_fa2_and0 11 1 .names f_u_csa4_fa2_xor0 f_u_csa4_fa1_or0 f_u_csa4_fa2_xor1 01 1 10 1 .names f_u_csa4_fa2_xor0 f_u_csa4_fa1_or0 f_u_csa4_fa2_and1 11 1 .names f_u_csa4_fa2_and0 f_u_csa4_fa2_and1 f_u_csa4_fa2_or0 1- 1 -1 1 .names f_u_csa4_xor0 f_u_csa4_xor2 f_u_csa4_and_propagate00 11 1 .names f_u_csa4_xor1 f_u_csa4_xor3 f_u_csa4_and_propagate01 11 1 .names f_u_csa4_and_propagate00 f_u_csa4_and_propagate01 f_u_csa4_and_propagate02 11 1 .names f_u_csa4_and_propagate02 f_u_csa4_mux2to10_not0 0 1 .names f_u_csa4_fa2_or0 f_u_csa4_mux2to10_not0 f_u_csa4_mux2to10_and1 11 1 .names f_u_csa4_ha0_xor0 f_u_csa4_out[0] 1 1 .names f_u_csa4_fa0_xor1 f_u_csa4_out[1] 1 1 .names f_u_csa4_fa1_xor1 f_u_csa4_out[2] 1 1 .names f_u_csa4_fa2_xor1 f_u_csa4_out[3] 1 1 .names f_u_csa4_mux2to10_and1 f_u_csa4_out[4] 1 1 .end