C111123313331323113313331313331333132313331322121111331323113121   >>    C11112331333132311331333131333133313231333132212111133132311312   <<    C111123313331323113313331313331333132313331322121111331323113123   >>      C111123313331323113313331313331333132313331322121111331323113122   >>