C111123313331323113313331333133313331323132311331323223313231133121   >>    C11112331333132311331333133313331333132313231133132322331323113312   <<    C111123313331323113313331333133313331323132311331323223313231133123   >>      C111123313331323113313331333133313331323132311331323223313231133122   >>