C1111233133313231133133313133313331323133313221211113313232211323221   >>    C111123313331323113313331313331333132313331322121111331323221132322   <<    C1111233133313231133133313133313331323133313221211113313232211323223   >>      C1111233133313231133133313133313331323133313221211113313232211323222   >>