C313212111113331323312111133133313331333133313331333133313331333133313233132211   >>    C31321211111333132331211113313331333133313331333133313331333133313331323313221   <<    C313212111113331323312111133133313331333133313331333133313331333133313233132213   >>      C313212111113331323312111133133313331333133313331333133313331333133313233132212   >>