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