* SPICE netlist
V0 A 0 PULSE(0 5 0 1n 1n 20m 40m)
V1 B 0 PULSE(0 5 0 1n 1n 10m 20m)
V2 C 0 PULSE(0 5 0 1n 1n 5m 10m)
ANOT1 A 0 0 0 0 A_Bar 0 0 BUF
ANOT2 B 0 0 0 0 B_Bar 0 0 BUF
ANOT3 C 0 0 0 0 C_Bar 0 0 BUF
AND0 A_Bar B_Bar C_Bar 0 0 0 Z0 0 AND
AND1 A_Bar B_Bar C 0 0 0 Z1 0 AND
AND2 A_Bar B C_Bar 0 0 0 Z2 0 AND
AND3 A_Bar B C 0 0 0 Z3 0 AND
AND4 A B_Bar C_Bar 0 0 0 Z4 0 AND
AND5 A B_Bar C 0 0 0 Z5 0 AND
AND6 A B C_Bar 0 0 0 Z6 0 AND
AND7 A B C 0 0 0 Z7 0 AND
.tran 70m

* LTspice schematic (.asc)
Version 4.1
SHEET 1 1088 832
WIRE -400 -416 -464 -416
WIRE 64 -416 32 -416
WIRE 144 -416 64 -416
WIRE -208 -400 -224 -400
WIRE -144 -400 -208 -400
WIRE 64 -384 64 -416
WIRE -464 -368 -464 -416
WIRE -400 -368 -400 -416
WIRE -208 -368 -208 -400
WIRE -144 -368 -144 -400
WIRE 144 -368 144 -416
WIRE -400 -288 -400 -304
WIRE 320 -288 -400 -288
WIRE -144 -272 -144 -304
WIRE 320 -272 -144 -272
WIRE 544 -272 384 -272
WIRE -400 -256 -400 -288
WIRE 144 -256 144 -304
WIRE 320 -256 144 -256
WIRE -144 -240 -144 -272
WIRE 144 -224 144 -256
WIRE -400 -192 -400 -256
WIRE 320 -192 -400 -192
WIRE -144 -176 -144 -240
WIRE 320 -176 -144 -176
WIRE 544 -176 384 -176
WIRE 64 -160 64 -384
WIRE 320 -160 64 -160
WIRE -400 -96 -400 -192
WIRE 320 -96 -400 -96
WIRE -208 -80 -208 -368
WIRE 320 -80 -208 -80
WIRE 544 -80 384 -80
WIRE 144 -64 144 -224
WIRE 320 -64 144 -64
WIRE -400 0 -400 -96
WIRE 320 0 -400 0
WIRE 544 0 528 0
WIRE -208 16 -208 -80
WIRE 320 16 -208 16
WIRE 528 16 528 0
WIRE 528 16 384 16
WIRE 64 32 64 -160
WIRE 320 32 64 32
WIRE -464 96 -464 -368
WIRE 320 96 -464 96
WIRE -144 112 -144 -176
WIRE 320 112 -144 112
WIRE 544 112 384 112
WIRE 144 128 144 -64
WIRE 320 128 144 128
WIRE -464 192 -464 96
WIRE 320 192 -464 192
WIRE -144 208 -144 112
WIRE 320 208 -144 208
WIRE 544 208 384 208
WIRE 64 224 64 32
WIRE 320 224 64 224
WIRE -464 288 -464 192
WIRE 320 288 -464 288
WIRE -208 304 -208 16
WIRE 320 304 -208 304
WIRE 544 304 384 304
WIRE 144 320 144 128
WIRE 320 320 144 320
WIRE -464 384 -464 288
WIRE 320 384 -464 384
WIRE -208 400 -208 304
WIRE 320 400 -208 400
WIRE 544 400 384 400
WIRE 64 416 64 224
WIRE 320 416 64 416
FLAG -544 -416 0
FLAG -304 -400 0
FLAG -48 -416 0
FLAG 544 -272 Z0
IOPIN 1040 240 Out
FLAG 544 -176 Z1
IOPIN 1040 336 Out
FLAG 544 -80 Z2
IOPIN 1040 432 Out
FLAG 544 0 Z3
IOPIN 1040 512 Out
FLAG 544 112 Z4
IOPIN 1040 624 Out
FLAG 544 208 Z5
IOPIN 1040 720 Out
FLAG 544 304 Z6
IOPIN 1040 816 Out
FLAG 544 400 Z7
IOPIN 1040 912 Out
FLAG -464 -368 A
IOPIN 32 144 In
FLAG -208 -368 B
IOPIN 288 144 In
FLAG 64 -384 C
IOPIN 560 128 In
FLAG -400 -256 A_Bar
IOPIN 96 256 In
FLAG -144 -240 B_Bar
IOPIN 352 272 In
FLAG 144 -224 C_Bar
IOPIN 640 288 In
SYMBOL voltage -448 -416 R90
SYMATTR InstName V0
SYMATTR Value PULSE(0 5 0 1n 1n 20m 40m)
SYMBOL voltage -208 -400 R90
SYMATTR InstName V1
SYMATTR Value PULSE(0 5 0 1n 1n 10m 20m)
SYMBOL voltage 48 -416 R90
SYMATTR InstName V2
SYMATTR Value PULSE(0 5 0 1n 1n 5m 10m)
SYMBOL Digital\\inv -336 -368 R90
SYMATTR InstName NOT1
SYMBOL Digital\\inv -80 -368 R90
SYMATTR InstName NOT2
SYMBOL Digital\\inv 208 -368 R90
SYMATTR InstName NOT3
SYMBOL Digital\\and 352 -320 R0
SYMATTR InstName AND0
SYMBOL Digital\\and 352 -224 R0
SYMATTR InstName AND1
SYMBOL Digital\\and 352 -128 R0
SYMATTR InstName AND2
SYMBOL Digital\\and 352 -32 R0
SYMATTR InstName AND3
SYMBOL Digital\\and 352 64 R0
SYMATTR InstName AND4
SYMBOL Digital\\and 352 160 R0
SYMATTR InstName AND5
SYMBOL Digital\\and 352 256 R0
SYMATTR InstName AND6
SYMBOL Digital\\and 352 352 R0
SYMATTR InstName AND7