Best I can do: m(3) + o(1) + o(1) + d(2) + y(4)+ m(3) + e(1) + l(1) + l(1) + o(1) + d(2) + r(1) + o (1) + n(1) + e(1) = 24

It’d be hard to top yours with those Ys and Zs!