C121212231313232233131323223313233313233313222213231323132333221   >>    C12121223131323223313132322331323331323331322221323132313233322   <<    C121212231313232233131323223313233313233313222213231323132333223   >>      C121212231313232233131323223313233313233313222213231323132333222   >>