C111123313331323113313331333133313231323133312111113231322121121   >>    C11112331333132311331333133313331323132313331211111323132212112   <<    C111123313331323113313331333133313231323133312111113231322121123   >>      C111123313331323113313331333133313231323133312111113231322121122   >>