(define clean-list
(lambda (x)
(list x (test x))))
(define test
(lambda (x)
(cond ((eq? x '()) '())
((= 0 (modulo (car x) 2))
(cons (car x) (test(cdr x))))
(else (test(cdr x))))
))
(write (clean-list '(4 11 16 22 75 34)))
KGRlZmluZSBjbGVhbi1saXN0CiAgKGxhbWJkYSAoeCkKICAgIChsaXN0IHggKHRlc3QgeCkpKSkKICAgIAooZGVmaW5lIHRlc3QKICAobGFtYmRhICh4KQogICAgKGNvbmQgKChlcT8geCAnKCkpICcoKSkKICAgIAkgICgoPSAwIChtb2R1bG8gKGNhciB4KSAyKSkgCiAgICAgICAgICAgKGNvbnMgKGNhciB4KSAodGVzdChjZHIgeCkpKSkKICAgICAgICAgIChlbHNlICh0ZXN0KGNkciB4KSkpKQogICAgKSkKCih3cml0ZSAoY2xlYW4tbGlzdCAnKDQgMTEgMTYgMjIgNzUgMzQpKSk=