C111123313331323113313331333133313331323133113313331333132313233231221   >>    C11112331333132311331333133313331333132313311331333133313231323323122   <<    C111123313331323113313331333133313331323133113313331333132313233231223   >>      C111123313331323113313331333133313331323133113313331333132313233231222   >>