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

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

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