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LLLL:=LAST_BOTTOM=0 AND REF(LAST_BOTTOM,1)<LAST_TOP AND LOW>REF(LOW,REF(LAST_BOTTOM,1)+1);
FG1:=BACKSET(REFX(LAST_TOP,1)=0 AND LAST_TOP<LAST_BOTTOM AND REFX(HIGH,1)>=REF(HIGH,LAST_TOP),LAST_TOP+1);
FD1:=BACKSET(REFX(LAST_BOTTOM,1)=0 AND LAST_BOTTOM<LAST_TOP AND REFX(LOW,1)<=REF(LOW,LAST_BOTTOM),LAST_BOTTOM+1);
FG11:=IF(LAST_TOP=0 AND REF(LAST_TOP,1)<LAST_BOTTOM AND
GT1:=BARSLAST(FG11<>1 AND FG1<>1 AND FG0);
DT1:=BARSLAST(FD11<>1 AND FD1<>1 AND FD0);
FD2:=BACKSET(REFX(GT1,1)=0 AND DT1<3 AND GT1-DT1<4 AND REF(LOW,DT1)>LLV(LOW,GT1+5),DT1+1);
FD2A:=BACKSET(REFX(GT1,1)=0 AND DT1<3 AND GT1-DT1<4 AND REF(LOW,DT1)<=LLV(LOW,GT1+5) AND REF(HIGH,GT1)>HHV(HIGH,GT1+5),DT1+1);
FD2B:=IF(DT1=0 AND GT1<4 AND REF(DT1,1)-GT1<4 AND REF(LOW,DT1)<=LLV(LOW,REF(GT1,1)+6) AND HIGH>HHV(HIGH,REF(GT1,1)+6),1,0);
FD231:=BACKSET(REFX(GT1,1)=0 AND DT1>3 AND GT1>DT1 AND GT1-DT1<4 AND REFX(HIGH,1)>REF(HIGH,GT1) AND REF(LOW,DT1)>REF(LLV(LOW,10),DT1),DT1+1);
FD23:=BACKSET(REFX(GT1,1)=0 AND DT1>3 AND GT1>DT1 AND GT1-DT1<4 AND REFX(HIGH,1)>REF(HIGH,GT1) AND (REF(HIGH,GT1)<REF(HHV(HIGH,13),GT1) OR REF(FD231,DT1)=0),DT1+1);
FD24:=BACKSET(REFX(GT1,1)=0 AND DT1>3 AND GT1>DT1 AND GT1-DT1<4 AND REFX(HIGH,1)<HHV(HIGH,GT1+3) AND REF(LOW,DT1)>LLV(LOW,DT1+5),DT1+1);
FG2:=BACKSET(REFX(DT1,1)=0 AND GT1<3 AND DT1-GT1<4 AND REF(HIGH,GT1)<HHV(HIGH,DT1+5),GT1+1);
FG2A:=BACKSET(REFX(DT1,1)=0 AND GT1<3 AND DT1-GT1<4 AND REF(LOW,DT1)<=LLV(LOW,GT1+5) AND REF(HIGH,GT1)>HHV(HIGH,GT1+5),GT1+1);
FG2B:=IF(GT1=0 AND DT1<4 AND REF(GT1,1)-DT1<4 AND REF(LOW,DT1)<=LLV(LOW,REF(GT1,1)+6) AND HIGH>HHV(HIGH,REF(GT1,1)+6),1,0);
FG231:=BACKSET(REFX(DT1,1)=0 AND GT1>3 AND DT1>GT1 AND DT1-GT1<4 AND REFX(LOW,1)<REF(LOW,DT1) AND REF(HIGH,GT1)<REF(HHV(HIGH,10),GT1),GT1+1);
FG23:=BACKSET(REFX(GT1,1)=0 AND DT1>3 AND GT1>DT1 AND GT1-DT1<4 AND REFX(HIGH,1)>REF(HIGH,GT1) AND (REF(HIGH,GT1)<REF(HHV(HIGH,13),GT1) OR REF(FD231,DT1)=0),GT1+1);
FG24:=BACKSET(REFX(DT1,1)=0 AND GT1>3 AND DT1>GT1 AND DT1-GT1<4 AND REFX(LOW,1)>LLV(LOW,DT1+3) AND REF(HIGH,GT1)<HHV(HIGH,GT1+5),GT1+1);
FG21:=IF(GT1=0 AND DT1<4 AND HIGH<=REF(HIGH,REF(GT1,1)+1),1,0);
FD21:=IF(DT1=0 AND GT1<4 AND LOW>=REF(LOW,REF(DT1,1)+1),1,0);
