C1111133313331323223313331333133313113313113313231333133313331333133323312311   >>    C111113331333132322331333133313331311331311331323133313331333133313332331231   <<    C1111133313331323223313331333133313113313113313231333133313331333133323312313   >>      C1111133313331323223313331333133313113313113313231333133313331333133323312312   >>