x1 = E
x2 = E_P_1
x3 = P
x4 = M
x5 = M1
x6 = E_M1
x7 = E_M
x8 = T
x9 = E_P_2
x10 = P2
x11 = P21
x12 = E_P21
x13 = E_P2
x14 = E_P1