*SUPPORT*
IN: dax tufa dax OUT: PINK PINK PINK
IN: dax dax lug OUT: PINK PINK PINK PINK
IN: blicket tufa wif OUT: YELLOW GREEN GREEN
IN: zup tufa zup OUT: RED RED RED
IN: zup tufa dax OUT: PINK RED RED
IN: wif lug OUT: YELLOW YELLOW
IN: blicket tufa blicket lug OUT: GREEN GREEN GREEN GREEN GREEN GREEN
IN: blicket kiki OUT: GREEN GREEN GREEN GREEN
IN: blicket wif lug OUT: GREEN YELLOW GREEN YELLOW
IN: zup tufa wif OUT: YELLOW RED RED
IN: dax kiki OUT: PINK PINK PINK PINK
IN: zup tufa blicket OUT: GREEN RED RED
IN: dax OUT: PINK
IN: dax tufa zup OUT: RED PINK PINK

*QUERY*
IN: zup OUT: RED
IN: wif tufa dax OUT: PINK YELLOW YELLOW
IN: blicket tufa blicket OUT: GREEN GREEN GREEN
IN: dax dax tufa zup OUT: PINK RED PINK PINK
IN: blicket OUT: GREEN
IN: zup dax kiki OUT: RED PINK RED PINK RED PINK RED PINK
IN: zup blicket tufa dax OUT: RED PINK GREEN GREEN
IN: zup kiki OUT: RED RED RED RED
IN: wif blicket OUT: YELLOW GREEN
IN: wif OUT: YELLOW

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