Version Y = Yellow Book of Lecan (TCD, MS 1318 (H.2.16)), cols. 3–88.
| Ref | Text | § | Print ref | MS | |
|---|---|---|---|---|---|
| YAdd.641 | Fiam .i. lorg. | YAdd | 641 | col. 42 | concord. |
| YAdd.642 | Fang .i. fiach. | YAdd | 642 | col. 42 | concord. |
| YAdd.643 | Fual quasi fuil ar a dath. ł quasi bual .i. uisce. | YAdd | 643 | col. 42 | concord. |
| YAdd.644 | Fuil quasi fluib a fluuio, ar is cosmail silit immalle. ł a flumine .i. on tsaignen, ar it cosmailius im dath ⁊ im deirgi datha. | YAdd | 644 | col. 42 | concord. |
| YAdd.645 | Fiadnuise .i. fiad-nass .i. fiada ronas. | YAdd | 645 | col. 42 | concord. |
| YAdd.646 | Fiadmuin .i. fiadmuin bid i muine. | YAdd | 646 | col. 42 | concord. |
| YAdd.647 | Firsi .i. nert, col. 43 ut dicitur ferr fira firse. | YAdd | 647 | col. 42 | concord. |
| YAdd.648 | Ferg .i. laech, unde dicitur comaid ferg foebar. | YAdd | 648 | col. 43 | concord. |
| YAdd.649 | Fell .i. ech, unde dicitur cap-fell. | YAdd | 649 | col. 43 | concord. |
| YAdd.650 | Fal .i. ri. | YAdd | 650 | col. 43 | concord. |