C3132121111133313233121111331333133313331333133313331333133313331313123232221   >>    C313212111113331323312111133133313331333133313331333133313331333131312323222   <<    C3132121111133313233121111331333133313331333133313331333133313331313123232223   >>      C3132121111133313233121111331333133313331333133313331333133313331313123232222   >>