English verb conjugation
COULD BOBSLEIGH

Regular verb: bobsleigh - bobsleighed - bobsleighed

Affirmation

Simple form	V-ing form
I could bobsleigh you could bobsleigh he could bobsleigh we could bobsleigh you could bobsleigh they could bobsleigh	I could be bobsleighing you could be bobsleighing he could be bobsleighing we could be bobsleighing you could be bobsleighing they could be bobsleighing
Perfect	V-ing perfect
I could have bobsleighed you could have bobsleighed he could have bobsleighed we could have bobsleighed you could have bobsleighed they could have bobsleighed	I could have been bobsleighing you could have been bobsleighing he could have been bobsleighing we could have been bobsleighing you could have been bobsleighing they could have been bobsleighing

Negation

Simple form	V-ing form
I could not bobsleigh you could not bobsleigh he could not bobsleigh we could not bobsleigh you could not bobsleigh they could not bobsleigh	I could not be bobsleighing you could not be bobsleighing he could not be bobsleighing we could not be bobsleighing you could not be bobsleighing they could not be bobsleighing
Perfect	V-ing perfect
I could not have bobsleighed you could not have bobsleighed he could not have bobsleighed we could not have bobsleighed you could not have bobsleighed they could not have bobsleighed	I could not have been bobsleighing you could not have been bobsleighing he could not have been bobsleighing we could not have been bobsleighing you could not have been bobsleighing they could not have been bobsleighing

Interrogative form

Simple form	V-ing form
could I bobsleigh? could you bobsleigh? could he bobsleigh? could we bobsleigh? could you bobsleigh? could they bobsleigh?	could I be bobsleighing? could you be bobsleighing? could he be bobsleighing? could we be bobsleighing? could you be bobsleighing? could they be bobsleighing?
Perfect	V-ing perfect
could I have bobsleighed? could you have bobsleighed? could he have bobsleighed? could we have bobsleighed? could you have bobsleighed? could they have bobsleighed?	could I have been bobsleighing? could you have been bobsleighing? could he have been bobsleighing? could we have been bobsleighing? could you have been bobsleighing? could they have been bobsleighing?

Interro-negative form

Simple form	V-ing form
could I not bobsleigh? could you not bobsleigh? could he not bobsleigh? could we not bobsleigh? could you not bobsleigh? could they not bobsleigh?	could I not be bobsleighing? could you not be bobsleighing? could he not be bobsleighing? could we not be bobsleighing? could you not be bobsleighing? could they not be bobsleighing?
Perfect	V-ing perfect
could I not have bobsleighed? could you not have bobsleighed? could he not have bobsleighed? could we not have bobsleighed? could you not have bobsleighed? could they not have bobsleighed?	could I not have been bobsleighing? could you not have been bobsleighing? could he not have been bobsleighing? could we not have been bobsleighing? could you not have been bobsleighing? could they not have been bobsleighing?