rf2
#define ls_box(x, c) four_tables(x, t_use(f, l), vf1, rf2, c)
#define ls_box(x, c) four_tables(x, t_use(l, s), vf1, rf2, c)
#define ls_box(x, c) one_table(x, upr, t_use(f, l), vf1, rf2, c)
#define ls_box(x, c) one_table(x, upr, t_use(l, s), vf1, rf2, c)
#define ls_box(x, c) no_table(x, t_use(s, box), vf1, rf2, c)