C1111233133313231133133313311211113313231323223313331323132312321   >>    C111123313331323113313331331121111331323132322331333132313231232   <<    C1111233133313231133133313311211113313231323223313331323132312323   >>      C1111233133313231133133313311211113313231323223313331323132312322   >>