How to "trunk" VLANs between Switches in a Gigastack

I got 3 catalyst 3548XL daisy chained by CX_GIGASTACK modules (half duplex). The 1. switch is connected to a L3 swicth via a trunk. On the 2. and 3. switch connected to the first vis gigastack modules, is it possible 2 have 2 VLANs passing the gigastack links to the 1. Switch?

Hello,
Thanks for your answer. Yes it answers my question - which I admit was not very clear, I was in a hurry. My concern was when the Gigastack module was in half duplex mode, then I was uncertain if it could be configured as trunk. As you se I managed to do that,
Floor1#sh int status | incl Gi0/1
Gi0/1 connected trunk a-half a-1000 1000BaseCX Gigastack
In fact, I was'nt successful until I configured "switchport nonegotiate"
interface GigabitEthernet0/1
switchport trunk encapsulation dot1q
switchport mode trunk
switchport nonegotiate
Once again THANKS.
Simon

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