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

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

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