C111123313121111121111331323133313331333132333133313232311232321   >>    C11112331312111112111133132313331333133313233313331323231123232   <<    C111123313121111121111331323133313331333132333133313232311232323   >>      C111123313121111121111331323133313331333132333133313232311232322   >>