([1][2]-1p -> [3]p)
(C1 [3]<2><1>-1C1)
z1((xR3z1) -> z2((xR1z2) (z1R2z2)))
# - -
@ - -
#' - -1 -
@' - -1 -
[n] -
<n> -
[n]'-
<n>'-
& - -
| - -
~ - -
-> -
<- -
<-> -