C3123223313331322121111331333133313331333121211113313331322132232211   >>    C312322331333132212111133133313331333133312121111331333132213223221   <<    C3123223313331322121111331333133313331333121211113313331322132232213   >>      C3123223313331322121111331333133313331333121211113313331322132232212   >>