1X = single
2X = double
3X = triple
4X = quadruple
5X = quintuple
6X = sextuple
7X = septuple
8X = octuple
9X = nonuple
10X = decuple
11X = undecuple
12X = duodecuple
13X = tredecuple
14X = quattuordecuple
15X = quindecuple
16X = sexdecuple
17X = septendecuple
18X = octodecuple
19X = novemdecuple
20X = vigintuple