C3132121111133313233121111331333133313331333133313331333133313222333231   >>    C313212111113331323312111133133313331333133313331333133313331322233323   <<    C3132121111133313233121111331333133313331333133313331333133313222333233   >>      C3132121111133313233121111331333133313331333133313331333133313222333232   >>