C21321133133313121211113313331323133313231333132233131121131321   >>    C2132113313331312121111331333132313331323133313223313112113132   <<    C21321133133313121211113313331323133313231333132233131121131323   >>      C21321133133313121211113313331323133313231333132233131121131322   >>