Select from the dropdown lists to complete the text.
11 = ( XI, IX, XII )
12 = ( XII, XIII, X )
13 = ( XIII, XIV, XVIII )
14 = ( XIV, XV, XVI )
15 = ( XV, X, XXV )
16 = ( XVI, XVII, XIV )
17 = ( XVII, XIX, XXIV )
18 = ( XVIII, XXXVIII, XVII )
19 = ( XIX, LX, XX )
20 = ( XX, XXX, XI )