BIAS:(CLOSE-MA(CLOSE,6))/MA(CLOSE,6)*100;BOLL:MA(CLOSE,21);LB:BOLL-2*STD(CLOSE,21);A:MA(C,250);B:MA(C,210);M:MA(C,60);N:MA(C,21);C>A AND BIAS <-6 AND L<LB AND B>A AND M>N;