N:=16;A1:=REF(H,n)=HHV(H,2*N+1);B1:=FILTER(A1,N);C1:=BKSET(B1,N+1);D1:=FILTER(C1,N);A2:=REF(L,n)=LLV(L,2*N+1);B2:=FILTER(A2,N);C2:=BACKSET(B2,N+1);D2:=FILTER(C2,N);E1:=(REF(LLV(L,2*N),1)+REF(HHV(H,2*N),1))/2;E2:=(H+L)/2;H1:=(D1 AND NOT(D2 AND E1>=E2)) OR BARSCOUNT(C)=1;L1:=(D2 AND NOT(D1 AND E1=E2);X1:=REF(BAAST(H1),1)+1;F1:=BACKSET(H1 AND COUNT(L1,X1)>0,LLVBARS(IF(L1,L,10000),X1));G1:=F1>REF(F1,1); I1:=BACKSET(G1,2);LD:=I1>REF(I1,1);:=LD OR BARSCOUNT(C)=1;X2:=REF(BARSLAST(L2),1)+1;F

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