Hi,i'm currently trying to reconnect a ceiling rose that i took off.I have 4 main cables coming out from ceiling,3 cables have brown,blue,yello/green cables,1 have 2 brown,yellow/green cables,any idea how to connect them in right order,i allready tried many combination,i have double switch at downstairs hall way,single switch upstairs landing,now downstairs lights working but upstairs landing lights not working,wonder where do i make the mistake,i'm sure it is only a minor thing i'm missing,but don't have clue what it is,can anybody help me please,thanks.