bold = Main text
   Book,  Verse      grey = Comment text

 1      I,   403    |         Thus Caesar spake; but doubtful murmurs ran~ ~
 2      I,   465    |            And others left the doubtful shore, which sea~ ~
 3     II,    46    |       Tear now the lock; while doubtful in the scales~ ~
 4     II,   505    |               Italia's cities, doubtful in their choice,~ ~
 5     IV,   246    |                             In doubtful battle, while the fates
 6     IV,   285    |                   Confirms the doubtful will: with monstrous joy~ ~
 7     IV,   872    |   there to meet his fate -- no doubtful end~ ~
 8      V,    75    |                             In doubtful sort, against their hidden
 9      V,   296    |        From the stern ranks no doubtful murmur rose;~ ~
10     VI,   138    | dragged from roots unknown the doubtful herb.~ ~
11     VI,   771    |   Forth from the depths, 'twas doubtful if the cave~ ~
12     VI,   830(39)|     lower regions. The text is doubtful.~ ~
13    VII,    25    |        which was not to be, by doubtful forms~ ~
14    VII,   708    |         Thy hateful prize, for doubtful are the fates;~ ~
15     IX,   833    |      life, to dwell within the doubtful marsh~ ~
16     IX,  1197    |                             To doubtful kingdoms, of uncertain troth,~ ~