C111123313121111121111331333133313331333131233133313113313331122112312321   >>    C11112331312111112111133133313331333133313123313331311331333112211231232   <<    C111123313121111121111331333133313331333131233133313113313331122112312323   >>      C111123313121111121111331333133313331333131233133313113313331122112312322   >>