C1111133313331323223313331333133313113313231331121111121111121312121   >>    C111113331333132322331333133313331311331323133112111112111112131212   <<    C1111133313331323223313331333133313113313231331121111121111121312123   >>      C1111133313331323223313331333133313113313231331121111121111121312122   >>