C31211133313132313231323331313132313231313232233132333132333132322123121   >>    C3121113331313231323132333131313231323131323223313233313233313232212312   <<    C31211133313132313231323331313132313231313232233132333132333132322123123   >>      C31211133313132313231323331313132313231313232233132333132333132322123122   >>