C21321133133313121211113313331323133313231333132233132313221323221   >>    C2132113313331312121111331333132313331323133313223313231322132322   <<    C21321133133313121211113313331323133313231333132233132313221323223   >>      C21321133133313121211113313331323133313231333132233132313221323222   >>