Revert "SG2"

This reverts commit 68935f7c236a0c0813f4775b95fed84683b8a82f.
Revert "SG2"

This reverts commit 5925b6a6c01947ef40733969d45baec96729bfbc.
Revert "SG2"

This reverts commit 68935f7c236a0c0813f4775b95fed84683b8a82f.
Revert "SG2"

This reverts commit 39c72f21c725b62d206108f0d5146a195c55778a.