English verb conjugation
COULD QUANTITATE

Regular verb: quantitate - quantitated - quantitated

Affirmation

Simple form	V-ing form
I could quantitate you could quantitate she could quantitate we could quantitate you could quantitate they could quantitate	I could be quantitating you could be quantitating she could be quantitating we could be quantitating you could be quantitating they could be quantitating
Perfect	V-ing perfect
I could have quantitated you could have quantitated she could have quantitated we could have quantitated you could have quantitated they could have quantitated	I could have been quantitating you could have been quantitating she could have been quantitating we could have been quantitating you could have been quantitating they could have been quantitating

Negation

Simple form	V-ing form
I couldn't quantitate you couldn't quantitate she couldn't quantitate we couldn't quantitate you couldn't quantitate they couldn't quantitate	I couldn't be quantitating you couldn't be quantitating she couldn't be quantitating we couldn't be quantitating you couldn't be quantitating they couldn't be quantitating
Perfect	V-ing perfect
I couldn't have quantitated you couldn't have quantitated she couldn't have quantitated we couldn't have quantitated you couldn't have quantitated they couldn't have quantitated	I couldn't have been quantitating you couldn't have been quantitating she couldn't have been quantitating we couldn't have been quantitating you couldn't have been quantitating they couldn't have been quantitating

Interrogative form

Simple form	V-ing form
could I quantitate? could you quantitate? could she quantitate? could we quantitate? could you quantitate? could they quantitate?	could I be quantitating? could you be quantitating? could she be quantitating? could we be quantitating? could you be quantitating? could they be quantitating?
Perfect	V-ing perfect
could I have quantitated? could you have quantitated? could she have quantitated? could we have quantitated? could you have quantitated? could they have quantitated?	could I have been quantitating? could you have been quantitating? could she have been quantitating? could we have been quantitating? could you have been quantitating? could they have been quantitating?

Interro-negative form

Simple form	V-ing form
couldn't I quantitate? couldn't you quantitate? couldn't she quantitate? couldn't we quantitate? couldn't you quantitate? couldn't they quantitate?	couldn't I be quantitating? couldn't you be quantitating? couldn't she be quantitating? couldn't we be quantitating? couldn't you be quantitating? couldn't they be quantitating?
Perfect	V-ing perfect
couldn't I have quantitated? couldn't you have quantitated? couldn't she have quantitated? couldn't we have quantitated? couldn't you have quantitated? couldn't they have quantitated?	couldn't I have been quantitating? couldn't you have been quantitating? couldn't she have been quantitating? couldn't we have been quantitating? couldn't you have been quantitating? couldn't they have been quantitating?