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

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

*GRAMMAR*
lug -> RED 
 wif -> PURPLE 
 zup -> GREEN 
 fep -> YELLOW 
 u1 tufa u2 -> [u2] [u1] 
 u1 gazzer u2 -> [u2] [u1] [u2] 
 x1 blicket -> [x1] [x1] 
 u1 x1 -> [u1] [x1] 
 