C11111211113313112113313331333133313221333133313113313331322331313231312321   >>    C1111121111331311211331333133313331322133313331311331333132233131323131232   <<    C11111211113313112113313331333133313221333133313113313331322331313231312323   >>      C11111211113313112113313331333133313221333133313113313331322331313231312322   >>