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

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

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