C11111211113313112113313331333133313221333133313113313231323233111   >>    C1111121111331311211331333133313331322133313331311331323132323311   <<    C11111211113313112113313331333133313221333133313113313231323233113   >>      C11111211113313112113313331333133313221333133313113313231323233112   >>