C2212133313231331121111331333133313223313113313331333131311212121   >>    C221213331323133112111133133313331322331311331333133313131121212   <<    C2212133313231331121111331333133313223313113313331333131311212123   >>      C2212133313231331121111331333133313223313113313331333131311212122   >>