C111123313121111121111331333133313331331121111133313331333133313232212323221   >>    C11112331312111112111133133313331333133112111113331333133313331323221232322   <<    C111123313121111121111331333133313331331121111133313331333133313232212323223   >>      C111123313121111121111331333133313331331121111133313331333133313232212323222   >>