ka1:=ref(close,2)/ref(open,2)<0.95
and ref(c,2)<ref(c,3);
ka2:=ref(open,1)<ref(close,2) and
ref(close,1)>ref(close,2) and
ref(close,1)>(ref(close,2)+ref(open,2))/2;
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ka3:=close>ref(close,1);
ka4:=llv(low,13)=ref(low,1);
kp1:backset(ka1 and ka2 and ka3 and ka4,3);
