(shifter E
(SRWC0 E (First E (Inv E) (Pass L)) (second E (Inv E) (Pass L)))
(SRWC1 E (First E (Inv E) (Pass E)) (second L (Inv E) (Pass E)))
(SRWC2 E (First L (Inv L) (Pass L)) (second E (Inv L) (Pass L)))
(SRWC3 E (First L (Inv L) (Pass L)) (second L (Inv L) (Pass L)))
(SRWC4 E (First E (Inv L) (Pass E)) (second L (Inv E) (Pass E)))
) )
(SRWC0 I (First I (Inv) (Pass)) (second I (Inv) (Pass)))
(SRWC1 I (First I (Inv) (Pass)) (second N (Inv) (Pass)))
(SRWC2 I (First N (Inv) (Pass)) (second I (Inv) (Pass)))
(SRWC3 I (First N (Inv) (Pass)) (second N (Inv) (Pass)))