C1111233133313231133133313133313331323133313221211113313231331121123231   >>    C111123313331323113313331313331333132313331322121111331323133112112323   <<    C1111233133313231133133313133313331323133313221211113313231331121123233   >>      C1111233133313231133133313133313331323133313221211113313231331121123232   >>