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

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

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