*SUPPORT*
IN: gazzer kiki wif dax zup lug OUT: PURPLE RED GREEN YELLOW PURPLE RED GREEN YELLOW
IN: zup OUT: YELLOW
IN: zup kiki tufa OUT: YELLOW RED RED
IN: zup dax gazzer OUT: YELLOW PURPLE
IN: wif zup kiki OUT: GREEN YELLOW RED
IN: wif OUT: GREEN
IN: gazzer wif tufa OUT: PURPLE GREEN GREEN
IN: zup kiki dax wif OUT: YELLOW RED GREEN
IN: wif kiki OUT: GREEN RED
IN: kiki tufa lug OUT: RED RED RED RED
IN: wif zup gazzer tufa OUT: GREEN YELLOW PURPLE PURPLE
IN: zup wif dax kiki lug OUT: YELLOW GREEN RED YELLOW GREEN RED
IN: zup tufa OUT: YELLOW YELLOW
IN: zup dax kiki OUT: YELLOW RED

*QUERY*
IN: zup tufa lug lug OUT: YELLOW YELLOW YELLOW YELLOW YELLOW YELLOW YELLOW YELLOW
IN: zup tufa lug OUT: YELLOW YELLOW YELLOW YELLOW
IN: wif gazzer OUT: GREEN PURPLE
IN: gazzer dax gazzer OUT: PURPLE PURPLE
IN: wif tufa lug OUT: GREEN GREEN GREEN GREEN
IN: kiki dax wif lug OUT: RED GREEN RED GREEN
IN: kiki OUT: RED
IN: wif tufa OUT: GREEN GREEN
IN: kiki dax zup OUT: RED YELLOW
IN: kiki dax wif OUT: RED GREEN

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