C1111233133313231133133313233313231323132313231131211113313232211   >>    C111123313331323113313331323331323132313231323113121111331323221   <<    C1111233133313231133133313233313231323132313231131211113313232213   >>      C1111233133313231133133313233313231323132313231131211113313232212   >>