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Exhibit 3.12

CERTIFICATE OF FORMATION
of
DALLASTOWN REALTY I, LLC

        This Certificate of Formation of Dallastown Realty I, LLC (the "Company"), is being duly executed and filed by the undersigned for the purpose of forming a limited liability company tinder the Delaware Limited Liability Company Act (Del. Code. AIM. tit. 6 18-101, et seq.).

        1.     The name of the limited liability company hereby formed under the Act is Dallastown Realty I, LLC.

        2.     The address of the registered office of the Company in the State of Delaware is:

c/o Corporation Service Company
1013 Centre Road
Wilmington, DE 19805

        3.     The name and address of the registered agent of the Company for service of process is:

Corporation Service Company
1013 Centre Road
Wilmington, DE 19805

        IN WITNESS WHEREOF, the undersigned have executed this 24th day of November, 1998.

/s/ Rachel Coan
Rachel Coan, Authorized Person

1

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Exhibit 3.12

CERTIFICATE OF FORMATION of DALLASTOWN REALTY I, LLC