*** input for INV2_1 ***
    t    Vin   SWin  SWout  
10000      1    0     0  
10001      1    1     0  
10002      0    0     0
10003      0    0     1   
10004      0    0     0
10005      1    0     0
10006      0    0     0
10007      0    1     0 
10008      0    0     0 
10010      1    0     0 
10011      1    0     1 
10012      0    0     0 
10020      0    0     0