C21321133133313121211113313331323133313231333132233132313112131121   >>    C2132113313331312121111331333132313331323133313223313231311213112   <<    C21321133133313121211113313331323133313231333132233132313112131123   >>      C21321133133313121211113313331323133313231333132233132313112131122   >>