[Unanswered]  How does deck building work for synchromes?

I have been wandering about this for a long time, and I haven't found any posts about it so I've decided to ask it myself, can i have a deck like this:
Wyvang Wyvang...
Wyvang Dragooon...
Dragooon Dragooon...
Or this:
Wyvang Balro...
Wyvang Dragooon...
Balro Dragooon...