(if A B C)

(and A B C D)

(or A B C (cond (D E F) (else G)))

(cond (A B) (C (and X Y Z)) (E F) (else G))

(let ((A B)) C D E F)

((lambda (A) C D E F) B)

(begin X Y Z)

(if A (if D E F) (if G H I))

(or A B (and C D E) F)