C31232233133313221211113313331333133313331212111133133313232313231231   >>    C3123223313331322121111331333133313331333121211113313331323231323123   <<    C31232233133313221211113313331333133313331212111133133313232313231233   >>      C31232233133313221211113313331333133313331212111133133313232313231232   >>