C11111333133313232233133313331333131121133131133133313233312111113231313231   >>    C1111133313331323223313331333133313112113313113313331323331211111323131323   <<    C11111333133313232233133313331333131121133131133133313233312111113231313233   >>      C11111333133313232233133313331333131121133131133133313233312111113231313232   >>