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|
lex
literal `a `b `+ `-
ignore /[ \n]/
end
def s
[`a `+ `b]
| [`a `- `b]
cons S: s "a + b
switch S
case [`a `- `b]
send stdout '1
case [`a `+ `b]
send stdout '2
switch S
case [`a `- `b]
send stdout '3
default
send stdout '4
switch S
case [`a `- `b]
send stdout '5
case [`a `+ `b]
send stdout '6
default
send stdout '7
switch S
case [`a `- `b]
send stdout '8
case [`a `- `b]
send stdout '9
default
send stdout '10
##### EXP #####
2
4
6
10
|
