Counties Under		Adjacent Counties
Consideration		(by Number)
1	Ashtabula	2, 12, 16
2	Lake	1, 3, 12
3	Cuyahoga	2, 4, 9, 10, 12, 13
4	Lorain	3, 5, 7, 9
5	Huron	4, 6, 7
6	Richland	5, 7, 17
7	Ashland	4, 5, 6, 8, 9, 17, 18
8	Wayne	7, 9, 10, 11, 18
9	Medina	3, 4, 7, 8, 10
10	Summit	3, 8, 9, 11, 12, 13
11	Stark	8, 10, 13, 14, 15, 18, 19, 20
12	Geauga	1, 2, 3, 10, 13, 16
13	Portage	3, 10, 11, 12, 15, 16
14	Columbiana	11, 15, 20
15	Mahoning	11, 13, 14, 16
16	Trumbull	1, 12, 13, 15
17	Knox	6, 7, 18
18	Holmes	7, 8, 11, 17, 19
19	Tuscarawas	11, 18, 20
20	Carroll	11, 14, 19

Help Ohio Trust determine the best way to set up its PPBs. Please show steps and formulas in Excel. Thank you!!

The long-range planning department for the Ohio Trust Company is considering expanding its operation into a 20-county region in northeastern Ohio. Currently, Ohio Trust does not have a principal place of business in any of the 20 counties. According to the banking laws in Ohio, if a bank establishes a principal place of business (PPB) in any county, branch banks can be established in that county and in any adjacent county. However, to establish a new principal place of business, Ohio Trust must either obtain approval for a new bank from the state's superintendent of banks or purchase an existing bank. The following table lists the 20 counties in the region and adjacent counties