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

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

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