C e f x q

C e f x qC e f x qC e f x qC e f x qC e f x qC e f x q
C e f x qC e f x qC e f x qC e f x qC e f x qC e f x q
C e f x qC e f x qC e f x qC e f x qC e f x qC e f x qC e f x qC e f x qC e f x qC e f x qC e f x qC e f x qC e f x q