C313212111113331323312111133133313331333133313331333133313331333212312121   >>    C31321211111333132331211113313331333133313331333133313331333133321231212   <<    C313212111113331323312111133133313331333133313331333133313331333212312123   >>      C313212111113331323312111133133313331333133313331333133313331333212312122   >>