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

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

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