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

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

*GRAMMAR*
lug -> BLUE 
 gazzer -> PURPLE 
 dax -> GREEN 
 fep -> RED 
 x1 tufa x2 -> [x2] [x1] 
 x1 zup u1 -> [u1] [u1] [x1] 
 x1 wif u1 -> [u1] [x1] 
 u1 x1 -> [u1] [x1] 
 