*SUPPORT*
IN: fep kiki OUT: BLUE BLUE BLUE
IN: zup gazzer zup OUT: PINK PINK
IN: wif kiki OUT: YELLOW YELLOW YELLOW
IN: wif gazzer wif OUT: YELLOW YELLOW
IN: lug tufa zup OUT: GREEN PINK PINK
IN: zup tufa zup OUT: PINK PINK PINK
IN: lug kiki OUT: GREEN GREEN GREEN
IN: zup fep gazzer zup OUT: PINK BLUE PINK
IN: wif OUT: YELLOW
IN: wif tufa lug OUT: YELLOW GREEN GREEN
IN: zup OUT: PINK
IN: zup kiki OUT: PINK PINK PINK
IN: fep OUT: BLUE
IN: lug tufa wif OUT: GREEN YELLOW YELLOW

*QUERY*
IN: lug zup lug fep tufa wif OUT: GREEN PINK GREEN BLUE YELLOW YELLOW
IN: lug gazzer wif OUT: GREEN YELLOW
IN: zup tufa lug OUT: PINK GREEN GREEN
IN: lug tufa fep OUT: GREEN BLUE BLUE
IN: wif gazzer zup OUT: YELLOW PINK
IN: fep fep kiki OUT: BLUE BLUE BLUE BLUE
IN: lug OUT: GREEN
IN: lug gazzer lug OUT: GREEN GREEN
IN: zup gazzer fep OUT: PINK BLUE
IN: fep tufa lug OUT: BLUE GREEN GREEN

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