C313212111113331323312111133133313331333133313331333133313331333133313212121   >>    C31321211111333132331211113313331333133313331333133313331333133313331321212   <<    C313212111113331323312111133133313331333133313331333133313331333133313212123   >>      C313212111113331323312111133133313331333133313331333133313331333133313212122   >>