C11111211113313112113313331333133313221333133313113313231333111121   >>    C1111121111331311211331333133313331322133313331311331323133311112   <<    C11111211113313112113313331333133313221333133313113313231333111123   >>      C11111211113313112113313331333133313221333133313113313231333111122   >>