C1111233133313231133133313231333133313113313232321323133313231333133313112211   >>    C111123313331323113313331323133313331311331323232132313331323133313331311221   <<    C1111233133313231133133313231333133313113313232321323133313231333133313112213   >>      C1111233133313231133133313231333133313113313232321323133313231333133313112212   >>