C111123313331323113313331313331333132313331322121111331323131312311   >>    C11112331333132311331333131333133313231333132212111133132313131231   <<    C111123313331323113313331313331333132313331322121111331323131312313   >>      C111123313331323113313331313331333132313331322121111331323131312312   >>