| singular | plural |
| Infinitive | | |
| deduce | |
| present simple | | |
| 1 | I deduce | we deduce |
| 2 | you deduce | you deduce |
| 3 | he/she/it deduces | they deduce |
| past simple | | |
| 1 | I deduced | we deduced |
| 2 | you deduced | you deduced |
| 3 | he/she/it deduced | they deduced |
| future simple | | |
| 1 | I will/shall deduce | we will/shall deduce |
| 2 | you will/shall deduce | you will/shall deduce |
| 3 | he/she/it will/shall deduce | they will/shall deduce |
| conditional simple | | |
| 1 | I would deduce | we would deduce |
| 2 | you would deduce | you would deduce |
| 3 | he/she/it would deduce | they would deduce |
| present continuous | | |
| 1 | I am deducing | we are deducing |
| 2 | you are deducing | you are deducing |
| 3 | he/she/it is deducing | they are deducing |
| past continuous | | |
| 1 | I was deducing | we were deducing |
| 2 | you were deducing | you were deducing |
| 3 | he/she/it was deducing | they were deducing |
| future continuous | | |
| 1 | I will be deducing | we will be deducing |
| 2 | you will be deducing | you will be deducing |
| 3 | he/she/it will be deducing | they will be deducing |
| conditional continuous | | |
| 1 | I would be deducing | we would be deducing |
| 2 | you would be deducing | you would be deducing |
| 3 | he/she/it would be deducing | they would be deducing |
| present perfect | | |
| 1 | I have deduced | we have deduced |
| 2 | you have deduced | you have deduced |
| 3 | he/she/it has deduced | they have deduced |
| past perfect | | |
| 1 | I had deduced | we had deduced |
| 2 | you had deduced | you had deduced |
| 3 | he/she/it had deduced | they had deduced |
| future perfect | | |
| 1 | I will have deduced | we will have deduced |
| 2 | you will have deduced | you will have deduced |
| 3 | he/she/it will have deduced | they will have deduced |
| conditional perfect | | |
| 1 | I would have deduced | we would have deduced |
| 2 | you would have deduced | you would have deduced |
| 3 | he/she/it would have deduced | they would have deduced |