C11111211113313112113313331333131133133313132313331323223311211331   >>    C1111121111331311211331333133313113313331313231333132322331121133   <<    C11111211113313112113313331333131133133313132313331323223311211333   >>      C11111211113313112113313331333131133133313132313331323223311211332   >>