C31232233133313221211113313331333133313331212111133133313311213321221   >>    C3123223313331322121111331333133313331333121211113313331331121332122   <<    C31232233133313221211113313331333133313331212111133133313311213321223   >>      C31232233133313221211113313331333133313331212111133133313311213321222   >>