C11111211113313112113313331333133313331333131211113313331123313223121   >>    C1111121111331311211331333133313331333133313121111331333112331322312   <<    C11111211113313112113313331333133313331333131211113313331123313223123   >>      C11111211113313112113313331333133313331333131211113313331123313223122   >>