*SUPPORT*
IN: gazzer zup fep wif lug OUT: GREEN GREEN PURPLE PINK
IN: gazzer dax gazzer zup lug OUT: PINK GREEN PINK
IN: gazzer OUT: PINK
IN: fep zup fep OUT: PURPLE PURPLE
IN: tufa lug OUT: RED GREEN
IN: gazzer tufa zup fep OUT: PINK PURPLE RED
IN: gazzer gazzer fep OUT: PINK PINK PURPLE
IN: tufa zup gazzer OUT: PINK RED
IN: lug OUT: GREEN
IN: fep zup gazzer wif lug OUT: GREEN GREEN PINK PURPLE
IN: lug zup fep OUT: PURPLE GREEN
IN: lug zup lug OUT: GREEN GREEN
IN: gazzer zup lug OUT: GREEN PINK
IN: fep OUT: PURPLE

*QUERY*
IN: lug wif tufa OUT: RED RED GREEN
IN: lug dax fep OUT: GREEN PURPLE
IN: gazzer zup fep OUT: PURPLE PINK
IN: tufa zup lug OUT: GREEN RED
IN: fep gazzer zup fep OUT: PURPLE PURPLE PINK
IN: gazzer gazzer lug dax gazzer tufa OUT: PINK PINK GREEN PINK RED
IN: tufa dax tufa dax tufa OUT: RED RED RED
IN: tufa wif lug wif lug OUT: GREEN GREEN GREEN GREEN RED
IN: gazzer tufa wif lug OUT: GREEN GREEN PINK RED
IN: fep zup tufa OUT: RED PURPLE

*GRAMMAR*
fep -> PURPLE 
 gazzer -> PINK 
 tufa -> RED 
 lug -> GREEN 
 x1 wif u1 -> [u1] [u1] [x1] 
 u1 zup u2 -> [u2] [u1] 
 u1 dax x1 -> [u1] [x1] 
 u1 x1 -> [u1] [x1] 
 