*SUPPORT*
IN: wif wif tufa zup OUT: YELLOW YELLOW GREEN
IN: fep zup gazzer blicket tufa blicket tufa blicket OUT: BLUE RED GREEN GREEN RED RED RED
IN: wif zup OUT: YELLOW GREEN
IN: zup tufa fep kiki blicket kiki blicket OUT: RED RED GREEN BLUE RED RED
IN: zup wif tufa zup kiki blicket OUT: RED GREEN YELLOW GREEN RED
IN: wif OUT: YELLOW
IN: fep kiki fep tufa fep OUT: BLUE BLUE BLUE BLUE
IN: wif tufa zup OUT: YELLOW GREEN
IN: zup zup kiki zup OUT: GREEN GREEN GREEN GREEN
IN: wif gazzer fep tufa fep OUT: BLUE BLUE YELLOW YELLOW BLUE BLUE
IN: zup wif OUT: GREEN YELLOW
IN: wif tufa wif OUT: YELLOW YELLOW
IN: wif gazzer blicket OUT: RED YELLOW YELLOW RED
IN: zup tufa zup OUT: GREEN GREEN

*QUERY*
IN: wif gazzer wif tufa zup OUT: YELLOW GREEN YELLOW YELLOW YELLOW GREEN
IN: blicket kiki zup OUT: GREEN RED GREEN
IN: blicket zup gazzer wif kiki wif OUT: YELLOW RED YELLOW GREEN GREEN YELLOW YELLOW
IN: wif wif OUT: YELLOW YELLOW
IN: zup kiki blicket OUT: RED GREEN RED
IN: zup fep tufa wif OUT: GREEN BLUE YELLOW
IN: fep kiki zup tufa blicket OUT: GREEN BLUE GREEN RED
IN: fep gazzer wif OUT: YELLOW BLUE BLUE YELLOW
IN: blicket OUT: RED
IN: fep OUT: BLUE

*GRAMMAR*
blicket -> RED 
 zup -> GREEN 
 wif -> YELLOW 
 fep -> BLUE 
 u1 gazzer x1 -> [x1] [u1] [u1] [x1] 
 x1 tufa u1 -> [x1] [u1] 
 x1 kiki u1 -> [u1] [x1] [u1] 
 u1 x1 -> [u1] [x1] 
 