B1 : TAKEN B2: NOT TAKEN B3: NOT TAKEN B4 : NOT TAKEN B5 : NOT TAKEN E1 : NOT TAKEN E2 : TAKEN E3 : NOT TAKEN E4 : NOT TAKEN E5 : NOT TAKEN M1 : TAKEN M2 : NOT TAKEN M3 : NOT TAKEN M4 : NOT TAKEN M5 : NOT TAKEN