Regular verb: tub - tubbed - tubbed
Simple form | V-ing form |
I could tub you could tub he could tub we could tub you could tub they could tub | I could be tubbing you could be tubbing he could be tubbing we could be tubbing you could be tubbing they could be tubbing |
Perfect | V-ing perfect |
I could have tubbed you could have tubbed he could have tubbed we could have tubbed you could have tubbed they could have tubbed | I could have been tubbing you could have been tubbing he could have been tubbing we could have been tubbing you could have been tubbing they could have been tubbing |
Simple form | V-ing form |
I couldn't tub you couldn't tub he couldn't tub we couldn't tub you couldn't tub they couldn't tub | I couldn't be tubbing you couldn't be tubbing he couldn't be tubbing we couldn't be tubbing you couldn't be tubbing they couldn't be tubbing |
Perfect | V-ing perfect |
I couldn't have tubbed you couldn't have tubbed he couldn't have tubbed we couldn't have tubbed you couldn't have tubbed they couldn't have tubbed | I couldn't have been tubbing you couldn't have been tubbing he couldn't have been tubbing we couldn't have been tubbing you couldn't have been tubbing they couldn't have been tubbing |
Simple form | V-ing form |
could I tub? could you tub? could he tub? could we tub? could you tub? could they tub? | could I be tubbing? could you be tubbing? could he be tubbing? could we be tubbing? could you be tubbing? could they be tubbing? |
Perfect | V-ing perfect |
could I have tubbed? could you have tubbed? could he have tubbed? could we have tubbed? could you have tubbed? could they have tubbed? | could I have been tubbing? could you have been tubbing? could he have been tubbing? could we have been tubbing? could you have been tubbing? could they have been tubbing? |
Simple form | V-ing form |
couldn't I tub? couldn't you tub? couldn't he tub? couldn't we tub? couldn't you tub? couldn't they tub? | couldn't I be tubbing? couldn't you be tubbing? couldn't he be tubbing? couldn't we be tubbing? couldn't you be tubbing? couldn't they be tubbing? |
Perfect | V-ing perfect |
couldn't I have tubbed? couldn't you have tubbed? couldn't he have tubbed? couldn't we have tubbed? couldn't you have tubbed? couldn't they have tubbed? | couldn't I have been tubbing? couldn't you have been tubbing? couldn't he have been tubbing? couldn't we have been tubbing? couldn't you have been tubbing? couldn't they have been tubbing? |