C11111211113313112113313331333133313231311331333133313231333132213331313321   >>    C1111121111331311211331333133313331323131133133313331323133313221333131332   <<    C11111211113313112113313331333133313231311331333133313231333132213331313323   >>      C11111211113313112113313331333133313231311331333133313231333132213331313322   >>