C1111233131211111211113313331333133313331312331333132322332123311   >>    C111123313121111121111331333133313331333131233133313232233212331   <<    C1111233131211111211113313331333133313331312331333132322332123313   >>      C1111233131211111211113313331333133313331312331333132322332123312   >>