C111123313121111121111331333133313331333131233133313331312112323321321   >>    C11112331312111112111133133313331333133313123313331333131211232332132   <<    C111123313121111121111331333133313331333131233133313331312112323321323   >>      C111123313121111121111331333133313331333131233133313331312112323321322   >>