I admit I hadn't read that part of the description, so was confused when Paraguay showed up twice. Makes perfect sense now that I understand the parameters.
I had two sets of doubles! For me, both Andorra and Djibouti appeared twice. According to the stats, there's a >40% difference in guess rates between the two forms of Andorra, with the version A_D_R_A at 77% and _N_O_R_ at only 34%.
_O_I_I_A
D_M_N_C_
_A_U_T_
V_N_A_U
The two for Netherlands are:
N_T_E_L_N_S
_E_H_R_A_D_
Which are both the correct expected outcomes (as can be seen by merging the two together!