C21321133133313121211113313331323133313231333132233132313331333132332131121   >>    C2132113313331312121111331333132313331323133313223313231333133313233213112   <<    C21321133133313121211113313331323133313231333132233132313331333132332131123   >>      C21321133133313121211113313331323133313231333132233132313331333132332131122   >>