C3132121111133313233121111331333133313331333133313331333133313112121221   >>    C313212111113331323312111133133313331333133313331333133313331311212122   <<    C3132121111133313233121111331333133313331333133313331333133313112121223   >>      C3132121111133313233121111331333133313331333133313331333133313112121222   >>