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

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

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