2 not
2 and
2 or
2 le
2 lt
2 ge
2 gt
2 in
2 notin
2 cmpeq
2 eq
2 ne
2 div
2 mod
2 join
2 meet
2 cat
1 true
1 false
0 #
0 @
0 &
0 !
0 <
0 |
0 :->
0 ->
0 >

