C11111211113313112113313331333133313221333133313113313331322331333132312323321   >>    C1111121111331311211331333133313331322133313331311331333132233133313231232332   <<    C11111211113313112113313331333133313221333133313113313331322331333132312323323   >>      C11111211113313112113313331333133313221333133313113313331322331333132312323322   >>