C312322331333132212111133133313331333133312121111113313233123311   >>    C31232233133313221211113313331333133313331212111111331323312331   <<    C312322331333132212111133133313331333133312121111113313233123313   >>      C312322331333132212111133133313331333133312121111113313233123312   >>