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

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

*GRAMMAR*
lug -> PINK 
 wif -> YELLOW 
 dax -> GREEN 
 fep -> RED 
 u1 zup -> [u1] [u1] 
 x1 gazzer x2 -> [x1] [x2] 
 u1 tufa u2 -> [u1] [u2] 
 u1 x1 -> [u1] [x1] 
 