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

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

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