---
 - [ 'S_GENKOU',       '元弘',     [ 1331, 11, 7 ]]
 - [ 'S_KENMU',        '建武',     [ 1334, 3, 12 ]]
 # XXX - EN-GEN?
 - [ 'S_EIGEN',        '延元',     [ 1336, 4, 19 ]]
 - [ 'S_KOUKOKU',      '興国',     [ 1340, 7, 1 ]]
 - [ 'S_SHOUHEI',      '正平',     [ 1347, 1, 27 ]]
 - [ 'S_KENTOKU',      '建徳',     [ 1370, 9, 21 ]]
 - [ 'S_BUNCHU',       '文中',     [ 1372, 6, 10 ]]
 - [ 'S_TENJU',        '天授',     [ 1375, 8, 2 ]]
 - [ 'S_KOUWA',        '弘和',     [ 1381, 4, 12 ]]
 - [ 'S_GENCHU',       '元中',     [ 1384, 6, 24 ], [ 1392, 11, 27 ]]