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I dont think so. My site had got a penalty due to haxlink attacks. So I prepared a disavow txt and sent.  I applied to google and they accepted it so I havent got any link penalty at the moment.They really  saw how I linked but that was no problem for them.

In fact I learned how I can use site wide links  as a result of unnatural link penalty.

Any suggestion?

I formed a network with 12 domains in 3 different data centers.How should I link them to my main Domain?

I did something :  all minor domains link to main domain site-wide (nofollow) and 3-5 internal links from each minor domains go to sub pages of the major domain (dofollow linking from content).

Shall I link each other like  A>>c>d......