C111123313331323113313331333133313231323133312111133112211232231   >>    C11112331333132311331333133313331323132313331211113311221123223   <<    C111123313331323113313331333133313231323133312111133112211232233   >>      C111123313331323113313331333133313231323133312111133112211232232   >>