C11111211113313112113313331333133313331333133213331333133313231331121   >>    C1111121111331311211331333133313331333133313321333133313331323133112   <<    C11111211113313112113313331333133313331333133213331333133313231331123   >>      C11111211113313112113313331333133313331333133213331333133313231331122   >>