C11111211113313112113313331333133313221333133313113313331323223321311   >>    C1111121111331311211331333133313331322133313331311331333132322332131   <<    C11111211113313112113313331333133313221333133313113313331323223321313   >>      C11111211113313112113313331333133313221333133313113313331323223321312   >>