12WTN is the equal division of the just perfect fifth into six parts of 116.9925 cents each alternated with a sequence of six equal steps of another interval between 100 and 133.333 cents in its patent tunings.

Optimal Intervals

Minimum a Maximum a [3\5 124.511¢] Minimum b Maximum b
1 116.9925
2 233.985
3 350.9775
4 467.97
5 584.9625
6 701.955
7 821.955 830.526 826.466 797.955 804.812
8 941.955 959.098 950.9775 893.955 907.669
9 1061.955 1087.67 1075.4885 989.955 1010.526
10 1181.955 1216.241 1200 1085.955 1113.384
11 1301.955 1344.812 1310.9775 1181.955 1216.241
12 1421.955 1473.384 1421.955 1277.955 1319.098