=>
'(#<syntax (1 + 1)> . #<syntax (5 + 1)>)'(#<syntax (1 + 1)>)'(#<syntax (1 + 1)> . #<syntax (3 * 5 |,| 25)>)
'(#<syntax (1 + 1)> . #<syntax (5 + 1)>)
'(#<syntax (1 + 1)>)
'(#<syntax (1 + 1)> . #<syntax (3 * 5 |,| 25)>)