[ WZ006-白色1双 ]
[ WZ006-黑色1双 ]
[ WZ006-灰色1双 ]
[ WZ006-(2黑+2灰+1白)=5双 ]
[ WZ006-(2白+2灰+1黑)=5双 ]
[ WZ006(2白+2黑+1灰)=5双 ]