English verb conjugation
COULD PITCH

Regular verb: pitch - pitched - pitched

Affirmation

Simple form	V-ing form
I could pitch you could pitch he could pitch we could pitch you could pitch they could pitch	I could be pitching you could be pitching he could be pitching we could be pitching you could be pitching they could be pitching
Perfect	V-ing perfect
I could have pitched you could have pitched he could have pitched we could have pitched you could have pitched they could have pitched	I could have been pitching you could have been pitching he could have been pitching we could have been pitching you could have been pitching they could have been pitching

Negation

Simple form	V-ing form
I couldn't pitch you couldn't pitch he couldn't pitch we couldn't pitch you couldn't pitch they couldn't pitch	I couldn't be pitching you couldn't be pitching he couldn't be pitching we couldn't be pitching you couldn't be pitching they couldn't be pitching
Perfect	V-ing perfect
I couldn't have pitched you couldn't have pitched he couldn't have pitched we couldn't have pitched you couldn't have pitched they couldn't have pitched	I couldn't have been pitching you couldn't have been pitching he couldn't have been pitching we couldn't have been pitching you couldn't have been pitching they couldn't have been pitching

Interrogative form

Simple form	V-ing form
could I pitch? could you pitch? could he pitch? could we pitch? could you pitch? could they pitch?	could I be pitching? could you be pitching? could he be pitching? could we be pitching? could you be pitching? could they be pitching?
Perfect	V-ing perfect
could I have pitched? could you have pitched? could he have pitched? could we have pitched? could you have pitched? could they have pitched?	could I have been pitching? could you have been pitching? could he have been pitching? could we have been pitching? could you have been pitching? could they have been pitching?

Interro-negative form

Simple form	V-ing form
couldn't I pitch? couldn't you pitch? couldn't he pitch? couldn't we pitch? couldn't you pitch? couldn't they pitch?	couldn't I be pitching? couldn't you be pitching? couldn't he be pitching? couldn't we be pitching? couldn't you be pitching? couldn't they be pitching?
Perfect	V-ing perfect
couldn't I have pitched? couldn't you have pitched? couldn't he have pitched? couldn't we have pitched? couldn't you have pitched? couldn't they have pitched?	couldn't I have been pitching? couldn't you have been pitching? couldn't he have been pitching? couldn't we have been pitching? couldn't you have been pitching? couldn't they have been pitching?