(((p q) q) -> (p q))
((C1 -> C2) (C2 -> C3) (C1 0) (C2 -1-1C3))
y1y2((xRy1) (y1Ry2) z1(xRz1) z2((y1Rz2) -> z3((z3Rz2) (y2Rz3))))
# - -
@ - -
#' - -1 -
@' - -1 -
[n] -
<n> -
[n]'-
<n>'-
& - -
| - -
~ - -
-> -
<- -
<-> -