LISA R+wmb+mb "FenceWmbdWWOnceOnce WseOnceOnce FenceMbdWROnceOnce FreOnceOnce" Prefetch=0:x=F,0:y=W,1:y=F,1:x=T Com=Ws Fr Orig=FenceWmbdWWOnceOnce WseOnceOnce FenceMbdWROnceOnce FreOnceOnce { } P0 | P1 ; w[once] x 1 | w[once] y 2 ; f[wmb] | f[mb] ; w[once] y 1 | r[once] r0 x ; Observed y=2; 1:r0=0;