:se nf=alpha
qycb","h
qOinstance (Monoid a) => M (a) where
mempty = (m)
(a1) `mappend` (a2) = (a1 `m` a2)4I -.qz(4YGpf)d2bPa, p
2;@yj@y+;@y2;@y$@yywPs1 `ma` q24@zgg4DZZ