[GIS] How to add multiple rules in a GetLegendGraphic request in Geoserver

geoservergetlegendgraphicsld

I am using following GetLegendGraphcs request

https://develop.blaa.nl/data/test/wms?LAYER=nccw:variabele_woz&request=GetLegendGraphic&format=image/png&styles=nccw_variabele_woz&rule=one

With this I am able to get Legend for Phase 1. I have rules for Phase 2 (rule2) , Phase 3 (rule3) and phase 4 (rule4) too. If I want rules for Phase 1 and Phase 2, how shall I use GetLegendGraphics request where I can include more rules.

Thanks & Regards