C3132121111133313233121111331333133313331333133313331333131133132233132313211   >>    C313212111113331323312111133133313331333133313331333133313113313223313231321   <<    C3132121111133313233121111331333133313331333133313331333131133132233132313213   >>      C3132121111133313233121111331333133313331333133313331333131133132233132313212   >>