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

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

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