至阴买副图/选股，阴性买进法

ABC1:=C=LLV(C,60);

ABC2:= REF(SUM((C-REF(C,1))/C*100,3)< -10,1) OR REF(SUM((C-REF(C,1))/C*100,4)< -10,1) OR REF(SUM((C-REF(C,1))/C*100,5)< -15,1);

至阴买入法:FILTER(crOSS(0.5,ABC1),10) AND ABC2;