C1111233133313231133133313331333133313231121333133313331323233221333121   >>    C111123313331323113313331333133313331323112133313331333132323322133312   <<    C1111233133313231133133313331333133313231121333133313331323233221333123   >>      C1111233133313231133133313331333133313231121333133313331323233221333122   >>