L^4*l10 + m^4*m10 + n^4*n10 + o^4*o10 + p^4*p10 + q^4*q10 + r^4*r10 + s^4*s10 + t^4*t10 + u^4*u10 + v^4*v10 + w^4*w10 + x^4*x10 + y^4*y10