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

*QUERY*
IN: fep tufa wif OUT: GREEN YELLOW
IN: lug wif wif OUT: PURPLE YELLOW YELLOW
IN: lug lug OUT: PURPLE PURPLE
IN: fep zup tufa zup blicket OUT: GREEN RED RED GREEN RED RED
IN: wif blicket OUT: YELLOW YELLOW
IN: wif OUT: YELLOW
IN: zup tufa fep blicket OUT: RED GREEN RED GREEN
IN: wif dax zup zup blicket OUT: RED RED RED RED YELLOW
IN: lug tufa wif blicket blicket OUT: PURPLE YELLOW PURPLE YELLOW PURPLE YELLOW PURPLE YELLOW
IN: zup zup OUT: RED RED

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