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For ((1 2) (3 4) (5 6)), you can use loop for (a b) in '((1 2) (3 4) (5 6)) to get a = 1, b = 2 each time.
But for '(1 2 3 4), I try to do loop for x on '(1 2 3 4) by #'cddr for a = (car x) for b = (cadr x) to get a = 1, b = 2.
Is there a better way to do such thing?
Try
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