informed (English)
├── -ed (English)
│ └── -od (Old English (ca. 450-1100))
├── formed (English)
├── in- (English)
│ ├── in (Latin)
│ ├── in- (Latin)
│ └── in- (Middle English (1100-1500))
│ └── in- (Old English (ca. 450-1100))
│ └── in (Old English (ca. 450-1100))
└── inform (English)
└── informen (Middle English (1100-1500))
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