C1111133313331323223313331333133313311211111211331333131133133313232113312111   >>    C111113331333132322331333133313331331121111121133133313113313331323211331211   <<    C1111133313331323223313331333133313311211111211331333131133133313232113312113   >>      C1111133313331323223313331333133313311211111211331333131133133313232113312112   >>