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

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

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