C1111133313331323223313331333133313113313112113121111331333131321233132313121   >>    C111113331333132322331333133313331311331311211312111133133313132123313231312   <<    C1111133313331323223313331333133313113313112113121111331333131321233132313123   >>      C1111133313331323223313331333133313113313112113121111331333131321233132313122   >>