((p q) -> (p q))
((C1 -> C2) (C1 -> C3) (C1 (-1C2 -1C3)))
y1y2((xRy1) (xRy2) z1((xRz1) -> z2((z1Rz2) (y1Rz2) (y2Rz2))))
# - -
@ - -
#' - -1 -
@' - -1 -
[n] -
<n> -
[n]'-
<n>'-
& - -
| - -
~ - -
-> -
<- -
<-> -