- caar pairprocedure
- cadr pairprocedure
- cdar pairprocedure
- cddr pairprocedure
- caaar pairprocedure
- caadr pairprocedure
- cadar pairprocedure
- caddr pairprocedure
- cdaar pairprocedure
- cdadr pairprocedure
- cddar pairprocedure
- cdddr pairprocedure
- caaaar pairprocedure
- caaadr pairprocedure
- caadar pairprocedure
- caaddr pairprocedure
- cadaar pairprocedure
- cadadr pairprocedure
- caddar pairprocedure
- cadddr pairprocedure
- cdaaar pairprocedure
- cdaadr pairprocedure
- cdadar pairprocedure
- cdaddr pairprocedure
- cddaar pairprocedure
- cddadr pairprocedure
- cdddar pairprocedure
- cddddr pairprocedure
These procedures are compositions of car and cdr, where for example caddr could be defined by
(define caddr (lambda (x) (car (cdr (cdr x))))).