Warning, this verb may not exist. Conjugation is given as example.
Affirmation
Simple form
I could cover blanket you could cover blanket he could cover blanket we could cover blanket you could cover blanket they could cover blanket
V-ing form
I could be cover blanketing you could be cover blanketing he could be cover blanketing we could be cover blanketing you could be cover blanketing they could be cover blanketing
Perfect
I could have cover blanketed you could have cover blanketed he could have cover blanketed we could have cover blanketed you could have cover blanketed they could have cover blanketed
V-ing perfect
I could have been cover blanketing you could have been cover blanketing he could have been cover blanketing we could have been cover blanketing you could have been cover blanketing they could have been cover blanketing
Negation
Simple form
I couldn't cover blanket you couldn't cover blanket he couldn't cover blanket we couldn't cover blanket you couldn't cover blanket they couldn't cover blanket
V-ing form
I couldn't be cover blanketing you couldn't be cover blanketing he couldn't be cover blanketing we couldn't be cover blanketing you couldn't be cover blanketing they couldn't be cover blanketing
Perfect
I couldn't have cover blanketed you couldn't have cover blanketed he couldn't have cover blanketed we couldn't have cover blanketed you couldn't have cover blanketed they couldn't have cover blanketed
V-ing perfect
I couldn't have been cover blanketing you couldn't have been cover blanketing he couldn't have been cover blanketing we couldn't have been cover blanketing you couldn't have been cover blanketing they couldn't have been cover blanketing
Interrogative form
Simple form
could I cover blanket? could you cover blanket? could he cover blanket? could we cover blanket? could you cover blanket? could they cover blanket?
V-ing form
could I be cover blanketing? could you be cover blanketing? could he be cover blanketing? could we be cover blanketing? could you be cover blanketing? could they be cover blanketing?
Perfect
could I have cover blanketed? could you have cover blanketed? could he have cover blanketed? could we have cover blanketed? could you have cover blanketed? could they have cover blanketed?
V-ing perfect
could I have been cover blanketing? could you have been cover blanketing? could he have been cover blanketing? could we have been cover blanketing? could you have been cover blanketing? could they have been cover blanketing?
Interro-negative form
Simple form
couldn't I cover blanket? couldn't you cover blanket? couldn't he cover blanket? couldn't we cover blanket? couldn't you cover blanket? couldn't they cover blanket?
V-ing form
couldn't I be cover blanketing? couldn't you be cover blanketing? couldn't he be cover blanketing? couldn't we be cover blanketing? couldn't you be cover blanketing? couldn't they be cover blanketing?
Perfect
couldn't I have cover blanketed? couldn't you have cover blanketed? couldn't he have cover blanketed? couldn't we have cover blanketed? couldn't you have cover blanketed? couldn't they have cover blanketed?
V-ing perfect
couldn't I have been cover blanketing? couldn't you have been cover blanketing? couldn't he have been cover blanketing? couldn't we have been cover blanketing? couldn't you have been cover blanketing? couldn't they have been cover blanketing?