C111123313331323113313331333133313331323132311331323223313131121   >>    C11112331333132311331333133313331333132313231133132322331313112   <<    C111123313331323113313331333133313331323132311331323223313131123   >>      C111123313331323113313331333133313331323132311331323223313131122   >>