C111113331333132322331333133313331333132313121111331311212111133133313231232311   >>    C11111333133313232233133313331333133313231312111133131121211113313331323123231   <<    C111113331333132322331333133313331333132313121111331311212111133133313231232313   >>      C111113331333132322331333133313331333132313121111331311212111133133313231232312   >>