C1111233133313231133133313311211113313231323223313331323132333121   >>    C111123313331323113313331331121111331323132322331333132313233312   <<    C1111233133313231133133313311211113313231323223313331323132333123   >>      C1111233133313231133133313311211113313231323223313331323132333122   >>