XG1:=(HHV(HIGH,20)/LLV(LOW,20)-1)*100;
XG2:=XG1<=12;
XG3:=(REF(CLOSE,4)-CLOSE)/REF(CLOSE,4)*100>=8;
XG4:=REF(HIGH,2)>REF(HIGH,1) AND HIGH>REF(HIGH,1) AND REF(LOW,2)>REF(LOW,1) AND LOW>REF(LOW,1);
XG5:=BARSLAST(XG3);
XG6:=EXIST(XG2,XG5+8);
XG7:=XG4 AND XG5>=1 AND XG5<=6 AND XG6;
急跌挖坑X:FILTER(XG7,5);
