English verb conjugation
COULD RADIOLABEL

Regular verb: radiolabel - radiolabeled - radiolabeled

Affirmation

Simple form	V-ing form
I could radiolabel you could radiolabel he could radiolabel we could radiolabel you could radiolabel they could radiolabel	I could be radiolabeling you could be radiolabeling he could be radiolabeling we could be radiolabeling you could be radiolabeling they could be radiolabeling
Perfect	V-ing perfect
I could have radiolabeled you could have radiolabeled he could have radiolabeled we could have radiolabeled you could have radiolabeled they could have radiolabeled	I could have been radiolabeling you could have been radiolabeling he could have been radiolabeling we could have been radiolabeling you could have been radiolabeling they could have been radiolabeling

Negation

Simple form	V-ing form
I couldn't radiolabel you couldn't radiolabel he couldn't radiolabel we couldn't radiolabel you couldn't radiolabel they couldn't radiolabel	I couldn't be radiolabeling you couldn't be radiolabeling he couldn't be radiolabeling we couldn't be radiolabeling you couldn't be radiolabeling they couldn't be radiolabeling
Perfect	V-ing perfect
I couldn't have radiolabeled you couldn't have radiolabeled he couldn't have radiolabeled we couldn't have radiolabeled you couldn't have radiolabeled they couldn't have radiolabeled	I couldn't have been radiolabeling you couldn't have been radiolabeling he couldn't have been radiolabeling we couldn't have been radiolabeling you couldn't have been radiolabeling they couldn't have been radiolabeling

Interrogative form

Simple form	V-ing form
could I radiolabel? could you radiolabel? could he radiolabel? could we radiolabel? could you radiolabel? could they radiolabel?	could I be radiolabeling? could you be radiolabeling? could he be radiolabeling? could we be radiolabeling? could you be radiolabeling? could they be radiolabeling?
Perfect	V-ing perfect
could I have radiolabeled? could you have radiolabeled? could he have radiolabeled? could we have radiolabeled? could you have radiolabeled? could they have radiolabeled?	could I have been radiolabeling? could you have been radiolabeling? could he have been radiolabeling? could we have been radiolabeling? could you have been radiolabeling? could they have been radiolabeling?

Interro-negative form

Simple form	V-ing form
couldn't I radiolabel? couldn't you radiolabel? couldn't he radiolabel? couldn't we radiolabel? couldn't you radiolabel? couldn't they radiolabel?	couldn't I be radiolabeling? couldn't you be radiolabeling? couldn't he be radiolabeling? couldn't we be radiolabeling? couldn't you be radiolabeling? couldn't they be radiolabeling?
Perfect	V-ing perfect
couldn't I have radiolabeled? couldn't you have radiolabeled? couldn't he have radiolabeled? couldn't we have radiolabeled? couldn't you have radiolabeled? couldn't they have radiolabeled?	couldn't I have been radiolabeling? couldn't you have been radiolabeling? couldn't he have been radiolabeling? couldn't we have been radiolabeling? couldn't you have been radiolabeling? couldn't they have been radiolabeling?