C21321133133313121211113313331323133313231333132233132322131111   >>    C2132113313331312121111331333132313331323133313223313232213111   <<    C21321133133313121211113313331323133313231333132233132322131113   >>      C21321133133313121211113313331323133313231333132233132322131112   >>