Items further to the right require higher expenses in science.
r_8 r_8d
r_12 r_12d
r_13 r_13d
r_14 r_14d
r_15 r_15d
r_16 r_16d
r_17 r_17d
u_2 u_2d
u_10 u_10d
u_13 u_13d
u_15 u_15d
u_16 u_16d
u_17 u_17d
u_18 u_18d
b_4 b_4d
b_8 b_8d
b_13 b_13d
b_15 b_15d