C111123313121111121111331323133313331333132333133313331322331323133313232212111   >>    C11112331312111112111133132313331333133313233313331333132233132313331323221211   <<    C111123313121111121111331323133313331333132333133313331322331323133313232212113   >>      C111123313121111121111331323133313331333132333133313331322331323133313232212112   >>