Which is acceptable linebreeding? both or neither - Page 1

 Hey guys Im just little confused on linebreeding, can anyone tell me what linebreeding is not acceptable.
like 3-2, 2-3 etc.

And

I have provided links of pedigree here, which pedigree is acceptable or neither of both pedigrees?
because  as far as i know, 3-2 linebreeding is not acceptable. (just what i have read though)
can i anyone who can explain this to me? Thanks in advance

pedigree 1
http://www.pedigreedatabase.com/gsd/pedigree/668546.html

pedigree 2
http://www.pedigreedatabase.com/gsd/pedigree/668551.html

with a 2-3 or a 3-2 they are trying to mimic the  genetic data of the grandsire or the granddam.
it can be risky, but the results can be amazing. to do this, the breeder really needs to know the dogs traits - good and bad - very well and they need to know what the offspring of both are producing. A 2-3, or 3-2 is the closest breeding the SV will accept.

or at least that is what i have read.

both 2-3 & 3-2 both are accepted...