C11111211113313112113313331333133313221333133313113313331323223321321   >>    C1111121111331311211331333133313331322133313331311331333132322332132   <<    C11111211113313112113313331333133313221333133313113313331323223321323   >>      C11111211113313112113313331333133313221333133313113313331323223321322   >>