| (subclass Month TimeInterval) | Merge.kif 9043-9043 | 子類 Month and TimeInterval |
| (subclass January Month) | Merge.kif 9048-9048 | 子類 January and Month |
| (subclass February Month) | Merge.kif 9062-9062 | 子類 February and Month |
| (subclass March Month) | Merge.kif 9086-9086 | 子類 March and Month |
| (subclass April Month) | Merge.kif 9100-9100 | 子類 April and Month |
| (subclass May Month) | Merge.kif 9114-9114 | 子類 May and Month |
| (subclass June Month) | Merge.kif 9128-9128 | 子類 June and Month |
| (subclass July Month) | Merge.kif 9142-9142 | 子類 July and Month |
| (subclass August Month) | Merge.kif 9156-9156 | 子類 August and Month |
| (subclass September Month) | Merge.kif 9170-9170 | 子類 September and Month |
| (subclass October Month) | Merge.kif 9185-9185 | 子類 October and Month |
| (subclass November Month) | Merge.kif 9199-9199 | 子類 November and Month |
| (subclass December Month) | Merge.kif 9213-9213 | 子類 December and Month |
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