C313212111113331323312111133133313331333133313331333133313331323233233111   >>    C31321211111333132331211113313331333133313331333133313331333132323323311   <<    C313212111113331323312111133133313331333133313331333133313331323233233113   >>      C313212111113331323312111133133313331333133313331333133313331323233233112   >>