Page 2 of Form 4255 with ERS field descriptors.Field 351AS is shown on Form 4255, Part I, Line 1a, column s.Field 351AT is shown on Form 4255, Part I, Line 1a, column t.Field 351CS is shown on Form 4255, Part I, Line 1c, column s.Field 351CT is shown on Form 4255, Part I, Line 1c, column t.Field 351DS is shown on Form 4255, Part I, Line 1d, column s.Field 351DT is shown on Form 4255, Part I, Line 1d, column t.Field 352AS is shown on Form 4255, Part I, Line 2a, column s.Filed 352AT is shown on Form 4255, Part I. Line 2a, column t.