Get port and line in difference ways by using Task.DIChannels.CreateChannel

I know I can use this way like  (for example)
"/cardName/port2/line3"    or
"/cardName/port2/line1:5" or

"/cardName/port2ort3"

But if I want to get the bits     4567 from port 2 and bits 012 from port 3?

Something like "/cardName/port2/line4:7/port3/line4:7"??