C1111133313331323223313331333133313331333123313231323132333132313231121   >>    C111113331333132322331333133313331333133312331323132313233313231323112   <<    C1111133313331323223313331333133313331333123313231323132333132313231123   >>      C1111133313331323223313331333133313331333123313231323132333132313231122   >>