2*9B    #MAC  CASFID
 2*P2    #SKI  22?   
 2B8L    (   
 2BN=    #ALT  22?=22?-1 
 2C7W    #TRA  21?/4+CASTAB+1
 2CMG    #FID  21?&3*6,21?&3*6+5,20? 
 2D76    #ALT  21?=21?+1 
 2DLQ    #TRA  CASMID+20?
 2F6B          +23?  
 2FL2          CASFID
 2G5L    )   
 2GK=    #NOR