All branches— aside from fortuitous deviations, to a chronic form during dull times — it.
13th-21st; IV: 19th- 27th; V: 25th-33rd; VI: 31st-39th; VII: 37th-45th; VIII: 43rd- 51st week.
13th-21st; IV: 19th- 27th; V: 25th-33rd; VI: 31st-39th; VII: 37th-45th; VIII: 43rd- 51st week.