C1111233133313231133133313331333133313231323331333133112331333132313112121   >>    C111123313331323113313331333133313331323132333133313311233133313231311212   <<    C1111233133313231133133313331333133313231323331333133112331333132313112123   >>      C1111233133313231133133313331333133313231323331333133112331333132313112122   >>