C312322331333132212111133133313331333133312121111133313232313231   >>    C31232233133313221211113313331333133313331212111113331323231323   <<    C312322331333132212111133133313331333133312121111133313232313233   >>      C312322331333132212111133133313331333133312121111133313232313232   >>