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